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Old June 26, 2011, 11:26 AM   #9
mapsjanhere
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Join Date: August 6, 2009
Location: Albuquerque
Posts: 2,385
Quote:
Regarding 1912: nope, the date code marking did not become mandatory in 1912. The Suhl proof house started using this in September 1923, the Zella-Mehlis proof house did it earlier. But usage was not mandatory.
This is contrary to Wirnsberger's standard book on German proof marks, do you have any citation for that?
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