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Portuguese real: research record

Evidence coverage: 1435–1911. This is the span of collected observations, not the currency’s lifetime.

This record includes associated currencies and earlier interpretations. The article selects the evidence relevant to its own history.

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Currency continuity

Portuguese real

FTM000053 · Research draft
One scoped currency identity. Changes to subdivisions, scale, standard, instruments or issuers do not by themselves create children. A distinct account unit can remain a successor.
Dated observations: 1435–1911; this does not establish the entire lifetime.

Parents / predecessors

Children / successors

Portuguese escudoredenominated as · 1911-05-22
↗
Cape Verdean escudoaccount unit branching · qualified · 1853–1865
↗
Brazilian real (réis)account unit branching · 1643–1694
↗

Latest research

Earlier account evidence

The governor arriving in Brazil in1642 recorded his funds in réis, within the transplanted Portuguese monetary system.

Sources and qualifications →
Modern account-unit review

Brazilian réis accounting continued the transplanted Portuguese real system and differentiated through colonial monetary and liability arrangements. Seventeenth-century local devaluation and provincial reform document this regional branch. Explicit inherited accounting and local debt effects now supplement earlier issue/recoinage evidence. Promote from optional to primary ancestry; retain envelope as differentiation chronology rather than exact unit birth.

Sources and qualifications →
Modern account-unit review

Retain Portuguese libra-system→real account succession; dinheiro belongs within the former profile and need not become an intervening node. Earlier real coin issues were denominated in existing account scales; account succession and coin debut must remain distinct.

Sources and qualifications →

Account-unit observations

Dated evidence, not exact birth or extinction dates.

1642supported

The governor arriving in Brazil in1642 recorded his funds in réis, within the transplanted Portuguese monetary system.

C1779
Monetary history 1 events

Includes dated issues, standards, subdivisions and institutional changes. Each event retains the source's date qualifications.

1435Unit attestation

Banco de Portugal traces the real replaced in 1911 to the reign of Duarte, by 1435. An institutional history of the unit, not an exact first-coin date.

C1010
Evidence & research notes 8 claims

Dated observations, not a proven complete lifespan.

Inference C1001

Brazilian réis developed from Portuguese money, with imported coin circulation followed by provincial recoinage. A documented unit-family branch; intervening coin ratings and Spanish-coin inputs remain to be expanded.

Corrected interpretation: Revision 28 supplies a new evidence basis for R0419. Explicit inherited accounting and local debt effects now supplement earlier issue/recoinage evidence. Promote from optional to primary ancestry; retain envelope as differentiation chronology rather than exact unit birth. Replacement evidence: C1796.

Banco Central do Brasil · Dinheiro no Brasil, second edition, 2004 Citation S477 · Open source ↗

Printed pages 6–10: imported Portuguese and Spanish coins, 1642 revaluation, 1694 provincial recoinage

Banco Central do Brasil, Museu de Valores · Síntese dos Padrões Monetários Brasileiros Citation S479 · Open source ↗

Réis entry: Portuguese origin, colonial circulation authorization in 1568 and 1942 conversion

Supported C1010

Banco de Portugal traces the real replaced in 1911 to the reign of Duarte, by 1435. An institutional history of the unit, not an exact first-coin date.

Banco de Portugal · Boletim Notas e Moedas, October 2010 Citation S480 · Open source ↗

Page 5: real attributed to Duarte in 1435; 22 May 1911 escudo reform at 1000 réis

Source access and limitations

The 1435 attribution is used as an attestation by that year, not a claim that no earlier real coins existed.

Medieval coin and account-unit epochs remain expandable.

Relevant indexed passage inspected in revision 16; Page 5: real attributed to Duarte in 1435; 22 May 1911 escudo reform at 1000 réis

Supported C1011

Portugal established the escudo at one thousand réis per escudo.

Banco de Portugal · Boletim Notas e Moedas, October 2010 Citation S480 · Open source ↗

Page 5: real attributed to Duarte in 1435; 22 May 1911 escudo reform at 1000 réis

Source access and limitations

The 1435 attribution is used as an attestation by that year, not a claim that no earlier real coins existed.

Medieval coin and account-unit epochs remain expandable.

Relevant indexed passage inspected in revision 16; Page 5: real attributed to Duarte in 1435; 22 May 1911 escudo reform at 1000 réis

Inference C1168

Cabo Verde’s real/escudo continuity is provisionally traced to regional differentiation from Portuguese-real accounting during 1853–1865. Local currency arrangements and issues support this qualified branch; the exact account-law boundary remains open.

Patrick Imam · Patrick Imam, Introducing the Euro as Legal Tender—Benefits and Costs of Eurorization for Cape Verde, IMF WP09/146 (2009) Citation S565 · Open source ↗

Appendix 1, pp.30–33, especially p.30 and historical table

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Supported C1779

The governor arriving in Brazil in 1642 recorded his funds in réis, within the transplanted Portuguese monetary system.

Fernando Carlos G. de Cerqueira Lima · Uma análise crítica da literatura sobre a oferta e a circulação de moeda metálica no Brasil nos séculos XVI e XVII, Estudos Econômicos 35(1),169–201 (2005) Citation S927 · Open source ↗

Lima2005 p.178 note15; Lima2025 pp.11–12

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Not merely abstract.

Fernando Carlos G. de C. Lima · Um conto de réis: a proclamação da moeda do império português em Malaca, RBEMF IE-UFRJ3(1),2025 Citation S929 · Open source ↗

Lima2005 p.178 note15; Lima2025 pp.11–12

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Supported C1796

Brazilian réis accounting continued the transplanted Portuguese real system and differentiated through colonial monetary and liability arrangements. Seventeenth-century local devaluation and provincial reform document this regional branch.

Fernando Carlos G. de Cerqueira Lima · Uma análise crítica da literatura sobre a oferta e a circulação de moeda metálica no Brasil nos séculos XVI e XVII, Estudos Econômicos 35(1),169–201 (2005) Citation S927 · Open source ↗

Lima2005pp.171–177,187–188;Lima1688sections1.3,3,4.1;Lima2025conclusion

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Not merely abstract.

Fernando Carlos Greenhalgh de Cerqueira Lima · A Lei de cunhagem de 4 de agosto de 1688 e a emissão de moeda provincial no Brasil (1695–1702), Revista de Economia Contemporânea 9(2), 2005 Citation S928 · Open source ↗

Lima2005pp.171–177,187–188;Lima1688sections1.3,3,4.1;Lima2025conclusion

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Fernando Carlos G. de C. Lima · Um conto de réis: a proclamação da moeda do império português em Malaca, RBEMF IE-UFRJ3(1),2025 Citation S929 · Open source ↗

Lima2005pp.171–177,187–188;Lima1688sections1.3,3,4.1;Lima2025conclusion

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Supported C1800

Portuguese state accounting replaced the libra with the real under Duarte. The change was practical account substitution; no single formal replacement ordinance is known.

Pedro Puntoni · Da libra ao real: sobre a formação do sistema monetário português (1185–1580), Revista de História178 (2019), DOI10.11606/issn.2316-9141.rh.2019.141351 Citation S930 · Open source ↗

A criação do real, opening paragraphs, notes49–51

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Supported C1942

Retain Portuguese libra-system→real account succession; dinheiro belongs within the former profile and need not become an intervening node.

Pedro Puntoni · Da libra ao real: sobre a formação do sistema monetário português (1185–1580), Revista de História178 (2019), DOI10.11606/issn.2316-9141.rh.2019.141351 Citation S930 · Open source ↗

A criação do real, notes49–51

Source access and limitations

Not a complete origin, lifespan or current-status audit.

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