Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks

Portugal ~ Current Standard Marks

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Portugal
Current Precious Metal Standard Marks

Silver ~ Lisbon Assay Office

Lisbon Silver Marks

Silver ~ Oporto Assay Office

Oporto Silver Marks
Gold ~ Lisbon Assay Office

Lisbon Gold Marks


Gold ~ Oporto Assay Office

Oporto Gold Marks


Platinum ~ Lisbon Assay Office

Lisbon Platinum Marks

Platinum ~ Oporto Assay Office

Oporto Platinum Marks











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