Postby silverport » Thu Aug 19, 2010 7:45 pm
Electro galvanic Replica of »Vaphio« cup II (Wild bulls).
Hello Bill
Almost replicas were made from copper! Because the replicas should show the original appearances; in case of the »Vaphio« cups, the replicas were gilded. It doesn’t matter if the basics were made from copper, “Sterling” (?) or other materials.
If you would read some professional explanations on replicas, be made by Electro galvanic processing, then you would learn, that is needed a homogenous processing material.
For that reason almost replica are made from copper — well, and some from silver, normally »pure« silver = 999.9-1,000 fineness.
“Sterling” as you know isn’t »pure« silver, but a silver of 925-1,000 fineness.
The problem in the Electro galvanic processing is that the dissolve of silver and copper is different, if you place a piece of 925-1,000 fineness as anode. Afterwards it was always necessary to plate the results surface with a more ore less thin layer of »pure« silver with 999.9-1,000 fineness; to get an optically homogenous appearance.
That would be also the same if the corpus were made from a gold alloy. I imagine that you hope and assume the »22« may stand for »22 carat gold«?
The mark on your »Vaphio« cup I don’t know — there are also two Greek »Delta« letters. So I guess the cup is made in Greece too.
If you hold in mind, that until the thirties of last century in Greece every silversmith was autonomous — he and his mark had only to be registered by the local police.
If he used a not usual silver or gold alloy, it was up to him to live with the consequences — if there were some, and then they were most times reactions by the local »market« only.
Until yet I don’t know, that exist a guide of maker’s mark from whole Greece.
I advise you, to place your marks question direct to the Greece National Museum.
Please inform afterwards »925-1000« from the result.
Thank you in advance!
Kind regards silverport