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Assay marks on Early American silver

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A.Bongiovanni Jr.
Posts: 1
Joined: Wed Mar 28, 2007 5:40 pm
Location: Rocky Point, NY

Assay marks on Early American silver

Postby A.Bongiovanni Jr. » Wed Mar 28, 2007 5:45 pm

Can an explanation please be given for calculating the purity of Early American silver using the assay marks? For example 10-15. Thank you.
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emaliek
contributor
Posts: 42
Joined: Tue Mar 27, 2007 1:55 pm
Location: Midwest

assay marks

Postby emaliek » Thu Apr 05, 2007 1:12 pm

According to the Rainwater book, the Baltimore Assay office marks for 1815-1830 were 11/12 or 10.15
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admin
Site Admin
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Joined: Fri Apr 01, 2005 6:52 pm

Postby admin » Thu Apr 05, 2007 2:28 pm

There's also just a bit more info in this post ->

viewtopic.php?t=3161
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