Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks
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Portugal ~ Current Standard Marks on Silver, Gold & Platinum
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Portugal
Current Precious Metal Standard Marks

Silver ~ Lisbon Assay Office
Lisbon Silver Marks

Silver ~ Porto Assay Office
Oporto Silver Marks
Platinum ~ Lisbon Assay Office
Lisbon Platinum Marks

Gold ~ Lisbon Assay Office
Lisbon Gold Marks


Gold ~ Porto Assay Office
Oporto Gold Marks


Platinum ~ Porto Assay Office
Oporto Platinum Marks

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Related Pages at 925-1000.com:
World Hallmarks
British Hallmarks Explained
Dutch Hallmarks
German Hallmarks pre-1886
German Hallmarks post-1886
French Hallmarks
Swedish Hallmarks
Finnish Hallmarks
Norwegian Makers
David-Andersen Marks
Georg Jensen Marks

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