Alves dos Reis: From the Ambaca Railway Raid to the 1925 Banknote Crisis

In July 1924, Portuguese police in Porto arrested a twenty-seven-year-old businessman named Artur Virgílio Alves dos Reis on charges of corporate embezzlement ^[1][3]. Two years earlier, Reis had engineered a brazen takeover of the Royal Trans-African Railway Company of Angola—universally known as the Ambaca railway—by writing uncovered checks for $100,000 drawn on a New York bank where he held no matching funds, seizing control of the company’s board before the checks cleared across the Atlantic, and using the railway’s own cash reserves to cover the draft ^[1][3][6]. Although his arrest in Porto halted his mining and railway speculations, the fifty-four days Reis spent in jail during the summer of 1924 proved to be the incubation period for a far larger financial crime ^[1][3].

While confined in his cell in Porto, Reis studied the institutional structure of the Banco de Portugal, a privately owned joint-stock company that held the state monopoly on issuing the nation’s currency ^[1][6]. Rather than attempting to counterfeit banknotes with inferior ink and paper, Reis designed a documentary fraud to trick the central bank’s official London security printer, Waterlow & Sons Limited, into manufacturing genuine 500-escudo notes from the original steel plates ^[1][3][5]. Between February and December 1925, Reis and his syndicate injected more than £1 million worth of unauthorized yet physically authentic banknotes into the Portuguese economy—equivalent to 0.88 percent of Portugal’s nominal gross domestic product—using the proceeds to establish their own commercial bank and quietly buy up shares in the Banco de Portugal itself ^[1][2].

The Oxford Forgery and the Ambaca Railway Takeover (1916–1924)#

Born in Lisbon on September 8, 1896, into a modest family whose father worked as an undertaker and later went bankrupt, Artur Virgílio Alves dos Reis displayed an early talent for documentary fabrication ^[1][3]. In 1916, after dropping out of his first year of engineering studies in Lisbon and marrying Maria Luísa Jacobetty de Azevedo, the nineteen-year-old Reis sought his fortune in colonial Angola ^[3]. To secure a senior civil service post, he forged an academic diploma from a nonexistent institution—the “Polytechnic School of Engineering” of the University of Oxford—certifying his graduation in engineering sciences, geology, metallurgy, and mechanical design ^[1][3]. After having the signature notarized through the British Consulate and certified in Lisbon, Reis arrived in Luanda in 1916 and was hired as a public works engineer supervising railway construction and locomotive maintenance ^[3][6].

Returning to Lisbon in 1922 with savings from colonial trade and import-export dealings, he purchased a Lisbon agency for American Hudson and Essex automobiles ^[1][3]. Soon he turned his attention to the Companhia Real dos Caminhos de Ferro Através de África, the Porto-based company chartered in the late nineteenth century to build and operate the railway linking Luanda to Ambaca in northern Angola ^[3][6]. Since 1914, the Ambaca railway had been locked in disputes with the Portuguese state over construction guarantees; in 1918 the colonial administration seized the line, leaving the company awaiting compensation ^[3]. By 1922, roughly $100,000 in state settlement cash sat inside the Ambaca company’s treasury while its shares traded at a steep discount ^[1][3][6].

Reis negotiated to buy a controlling block of Ambaca shares by writing personal checks totaling $100,000 drawn on a New York bank where his actual balance was negligible ^[1][6]. Exploiting the weeks required for physical checks to travel by steamship across the Atlantic for clearing, Reis presented himself as the new majority owner, installed his own management over the Ambaca board, and gained signing authority over its bank accounts ^[3][6]. Before the New York bank could dishonor his draft, he transferred $100,000 out of the Ambaca railway’s treasury to cover the check that had paid for the shares ^[1][6]. He then diverted an additional $60,000 of the railway company’s funds to acquire control of the South of Angola Mining Company (Companhia Mineira do Sul de Angola), appointing fellow speculator José Bandeira to its board ^[3].

Fifty-Four Days in Porto and the Design of the Banknote Plot (1924)#

Reis’s self-financing takeover of the Ambaca railway unraveled when minority shareholders and auditors discovered that the company’s liquid reserves had been looted to pay for its own acquisition and to finance outside mining concessions ^[1][3]. On July 5, 1924, authorities in Porto arrested Reis on charges of fraud and embezzlement ^[1][3].

During the fifty-four days he spent in custody in Porto before winning release on August 27, 1924—when an appellate ruling reclassified the Ambaca dispute as a civil matter—Reis analyzed why his railway raid had failed ^[1][6]. Kiting checks against corporate treasuries inevitably left an audit trail and unpaid creditors. Inside the Banco de Portugal, however, Reis saw a mechanism that could generate unbacked liquidity without leaving an immediate balance-sheet deficit ^[1][6].

Under Portuguese law, the Banco de Portugal was a private joint-stock corporation holding the exclusive privilege of issuing paper currency in metropolitan Portugal, while the Banco Nacional Ultramarino held the issuing monopoly in the colonies, including Angola ^[1][3]. Because Portugal lacked high-security intaglio printing facilities, the Banco de Portugal contracted Waterlow & Sons Limited of London to manufacture its high-denomination banknotes, including the 500-escudo note bearing the portrait of Vasco da Gama (dated November 17, 1922) ^[1][5]. Reis realized that if he became the majority shareholder of the Banco de Portugal, he could control the central bank’s leadership and regularize any unauthorized notes in circulation ^[1][6]. To raise the capital needed to buy the central bank’s stock, he decided to impersonate the directors of the Banco de Portugal and commission Waterlow & Sons to print an off-the-books run of genuine 500-escudo notes ^[1][3].

Forged Contracts and the Waterlow & Sons Printing Orders (1924–1925)#

Upon his release in late August 1924, Reis assembled a four-man syndicate ^[1][3]. Alongside José Bandeira—whose brother António Bandeira served as Portugal’s diplomatic minister in The Hague—Reis recruited Karel Marang van Ysselveere, a Dutch merchant holding diplomatic accreditation as Liberia’s consul and Persian commercial representative, and Gustav Adolf Hennies, a German financier ^[1][3][6].

Reis drafted bogus contracts typed on official Portuguese stamped bond paper (papel selado) ^[3]. The documents purported to show that an international consortium led by Reis had agreed to grant Angola a developmental loan of £1,000,000, and that in return the Portuguese Government and the Banco de Portugal had authorized the consortium to issue an equivalent value of metropolitan 500-escudo banknotes in Angola ^[1][3]. Reis obtained authentic notarized signatures on routine papers, transferred the certifications, and forged the signatures of Inocêncio Camacho Rodrigues, Governor of the Banco de Portugal, and deputy governor João Ulrich ^[1][3].

Because the Banco Nacional Ultramarino held the colonial issuing monopoly in Angola, any Portuguese central banker would have recognized the arrangement as legally impossible, but Reis gambled that a British printer would not know colonial banking law ^[1][3]. On December 4, 1924, Karel Marang met in London with Sir William Waterlow, chairman of Waterlow & Sons Limited, presenting a letter of introduction from the Portuguese legation in The Hague and the forged contracts ^[1][3][6].

Marang explained that because the Angolan loan was politically sensitive, the Lisbon directors required secrecy and wished all correspondence to pass through Marang ^[1][3]. After Reis forged a reply on Banco de Portugal stationery purportedly signed by Governor Camacho Rodrigues, Waterlow & Sons agreed to print 200,000 notes of 500 escudos each—face value 100 million escudos, or roughly £1 million—using the original steel plates, watermarked paper, and serial numbers previously used for the legitimate 1922 Vasco da Gama issue ^[1][5]. Every note printed for the syndicate duplicated the serial number of an authentic note already in circulation ^[1][5]. Waterlow delivered the first batches in early 1925, and in mid-1925 the syndicate ordered an additional 380,000 notes of 500 escudos (190 million escudos), bringing the total unauthorized printing to 580,000 notes with a nominal value of 290 million escudos ^[1][3][5].

The Banco de Angola e Metrópole and the Central Bank Buyout (1925)#

Smuggling suitcases of 500-escudo notes into Lisbon via diplomatic baggage privileges secured through José Bandeira’s connections, the syndicate put more than 200,000 of the Waterlow notes into circulation between February and December 1925, injecting £1,007,963 worth of currency—at 99.21 escudos to the pound sterling, a sum equal to 0.88 percent of Portugal’s nominal national income in 1925 ^[1][3].

Agents exchanged 500-escudo bills across Portugal for smaller denominations and foreign exchange while purchasing Lisbon real estate, rural estates, taxi fleets, and businesses ^[1][3]. In June 1925, Reis obtained a banking charter from the Ministry of Finance and established the Banco de Angola e Metrópole in Lisbon with an initial capital of 20 million escudos ^[1][2][3]. Flooded with virtually costless liquidity, the bank offered generous deposit rates and extended cheap business loans ^[1][6]. As economist Henry Wigan showed in his London School of Economics study, this monetary injection temporarily eased Portugal’s post-1924 credit deflation and supported the escudo ^[1].

Behind the scenes, every investment served Reis’s primary goal: capturing the Banco de Portugal ^[1][6]. Calculating that he needed roughly 45,000 shares to command a majority vote at the central bank’s general assembly, Reis bought through brokers in Lisbon, Paris, and Amsterdam during the summer and autumn of 1925, accumulating approximately 10,000 shares of the Banco de Portugal and driving its stock price sharply upward ^[1][3][6].

Unmasking the Fraud in Porto and the Collapse of the Syndicate (December 1925)#

The rapid rise of the Banco de Angola e Metrópole and its aggressive bidding for Banco de Portugal shares alarmed rival bankers and journalists ^[1][2]. Beginning on November 23, 1925, the Lisbon daily O Século published investigative reports questioning how the new bank commanded tens of millions of escudos in liquid cash without taking public deposits ^[1][2]. Following complaints from banks in Porto, where tellers noticed an abundance of crisp 500-escudo Vasco da Gama notes, the Banco de Portugal dispatched inspectors led by Luís Alberto de Oliveira Campos e Sá to examine the vaults connected to Reis’s operations in Porto ^[1][2][3].

On December 4 and 5, 1925, inspectors in Porto cross-checked bundles of pristine 500-escudo notes against the central bank’s registers and found physically identical, genuine Waterlow-printed 500-escudo notes bearing duplicate serial numbers ^[1][2][5]. On December 5, 1925, O Século broke the scandal on its front page ^[2]. The next day, December 6, 1925, the Banco de Portugal ordered all 500-escudo Vasco da Gama notes dated November 17, 1922, recalled within twenty days, honoring and withdrawing roughly 115,000 unauthorized notes by December 26 to preserve confidence in the currency ^[1][4]. Reis and José Bandeira were arrested in Lisbon on December 6, 1925, while Adolf Hennies fled and Karel Marang remained abroad ^[1][3].

Political Fallout, the 1930 Trial, and the House of Lords Judgment (1926–1932)#

The revelation that a financier arrested in 1924 for looting the Ambaca railway had returned within months to print nearly 1 percent of Portugal’s national income from the central bank’s London plates discredited the First Portuguese Republic ^[1][2]. Parliamentary inquiries documented by the Assembleia da República exposed administrative laxity and partisan recriminations ^[2]. Less than six months later, on May 28, 1926, a military coup overthrew the parliamentary republic, paving the way for the authoritarian Estado Novo regime and the appointment in 1928 of António de Oliveira Salazar as Minister of Finance ^[1][2][3].

Tried in Lisbon in May 1930, Reis was convicted in June 1930 and sentenced to twenty years in prison; released in May 1945, he died impoverished in Lisbon on July 9, 1955 ^[1][3][5]. In London, the Banco de Portugal sued Waterlow & Sons for breach of contract and negligence in Banco de Portugal v. Waterlow & Sons Ltd. (1932) AC 452 ^[1][4]. Rejecting Waterlow’s argument that an issuing bank suffered only paper-and-ink replacement costs, the House of Lords ruled by a three-to-two majority on April 28, 1932, that honoring the spurious notes had increased the central bank’s liabilities by their full face value, ordering Waterlow & Sons to pay £610,392 in damages ^[1][4][5].

Theoretical & Balance-Sheet Transmission Mechanism#

In the Kindleberger–Minsky taxonomy of financial instability (Kindleberger, 1978; Minsky, 1986) and Irving Fisher’s (1933) debt-deflation framework, speculative asset booms become systemic crises when credit expansion shifts balance sheets from hedge finance (cash flows covering principal and interest) to speculative and Ponzi finance (relying on rising asset prices and short-term margin roll-overs).

Once monetary tightening or an exogenous shock halts price appreciation, forced margin liquidations trigger Fisherian debt-deflation: fire-sale asset discounts erode bank collateral values, contracting credit supply across the real economy.

Sources and Further Reading

1. Henry Wigan, “ The Effects of the 1925 Portuguese Bank Note Crisis (Economic History Working Paper No. 82/04),” London School of Economics, Department of Economic History, 2004-02. Peer-Reviewed / Academic Research
2. Divisão de Edições e Museu Parlamentar, “ A Burla Alves dos Reis (1925) – Dossier Histórico-Parlamentar,” Assembleia da República (Parliament of Portugal), 2015. Historical & Financial Reference
3. Andrew Bull, “ Alves Reis and the Portuguese Bank Note Scandal of 1925,” British Historical Society of Portugal (Twenty-Fourth Annual Report and Review, pp. 22–41), 1997. Peer-Reviewed / Academic Research
4. “ Banco de Portugal v. Waterlow & Sons Ltd. (1932) AC 452 – Contract Damages Summary,” Digestible Notes (Legal Case Summaries). Historical & Financial Reference
5. “ The Portuguese Bank Note Crisis of 1925,” Paper Money Guaranty (PMG), 2019-01-15. Historical & Financial Reference
6. Bryan Taylor, “ The Piranha of Portugal: The Greatest Counterfeiter of All Time,” Finaeon (Global Financial Data), 2013-12. Historical & Financial Reference
7. Irving Fisher — "The Debt-Deflation Theory of Great Depressions," Econometrica 1, no. 4 (FRASER Federal Reserve Archive, 1933): 337–357 Central Bank / Monetary Authority
8. Charles P. Kindleberger & Robert Z. Aliber — Manias, Panics, and Crashes: A History of Financial Crises (Palgrave Macmillan) Peer-Reviewed / Academic Research

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