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Novamarketing Chiasso Medals Coins India F Portuguese India Portuguese Maria Rupee 1841
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# 580 / Rupee AD 1806 Maria I India F Portuguese - Diu
# 582 / Rupee AD 173x Joao V India F Portuguese - Goa
# 581Rupee AD 1841 Maria IIIndia F Portuguese - Diu Portuguese India – Maria II, Queen of Portugal (1834-1853). Rupia 1841, Mint: Diu, Silver (ø 22 mm – w. 8.37 g.). Edge: plain. Peres 1315-16, Gomes 25.01, Vaz. M2.70, KM 59.
Obverse: Crowned coat-of-arms of Portugal with ornaments.
Reverse: Cross of St. Thomas in centre between ornaments, date in its angles (1 - 8 - 4 - 1), denomination in Reis (600) above, mint name (DIO) below.
Note: Modern forgery. New manufacture, heavier and thicker than the original, with artificial patina. The coin also bears the coat-of-arms of Maria I instead of Maria II which has a different style. The silver alloy used to make it is wrong: silver and zinc instead of silver and copper.
Metallographic analysis: Ag 93.5 % / Zn 6.5 % (Examination performed using an energy dispersive X-ray fluorescence spectrometer (EDXRF), model Fischersope XAN-FD, on the coin’s surface (ca 100 microns depth) without any mechanical preparation).
Web references: http://www.zeno.ru/showphoto.php?photo=55676
Literature: Gerson da Cunha J. – Contributions to the Study of Indo-Portuguese Numismatics – First Edition, Bombay, 1880. AES reprint, 1995. Gomes A. – Moedas Portuguesas e do Territorio que hoje é Portugal – Edição da Associação de Portugal, 5a Edição, Lisboa, 2007. Krause C. and Mishler C. – Standard Catalog of World Coins 1801-1900 – Krause Publications, 4th Edition, Usa, 2004. Peres D. – Catalogo Das Moedas Indo-Portuguesa do Museu Numismatico Português – Vol. 1,2,3. Lisboa 1963,1964,1969. Vaz J.F. – Dinheiro Luso-Indiano (Indo-Portuguese Money) – Oficinas de Barbosa and Xavier Lda, 1a Edição, Braga-Portugal, 1980.