Postby blakstone » Sat Sep 22, 2007 1:42 am
These marks introduced in 1809 were discontinued in 1819, and an entirely different set of marks was used from 1819 to 1838. I think you may have made a typo there.
The assay office numbers that Tardy gives are only those in effect for the 1819-1838 marks. Lyon was not numbered 67 until 1819; before that it was #80 (from 1798-1809) and #85 (from 1809-1819). In other words, your set is not from Lyon.
The 1809 marks were introduced to accommodate all the territories assumed into Napoleon's Empire. In the 1809-1819 marks, #67 was the départment of Mont-Tonnerre, part of German territory in the Rhineland-Palatinate which was occupied by France in 1794, organized into a départment in 1798, and officially integrated as part of France in 1801. Two assay offices were opened there in Oct 1799, in Mayence (German = Mainz) and a satellite branch in Spire (German = Speyer). These used the codes "MT" and "MT*" (respectively from 1799-1809, and 67 and 67* (again, respectively) from 1809 until the end of the Empire around 1814/1815.
Your set, therefore, is actually German, made in Mainz during the French Napoleonic occupation, dating from 1809 when these marks were introduced and scarcely five years later when the Empire crumbled.
Very few of the French-style (i.e. lozenge) maker's marks are known for these short-lived foreign Imperial cities. However, given the time frame and the initial N, the likelist candidate is Mainz silversmith Johann Franz Xavier Nohatscheck (1752-1818). His widow, Maria Katherina Kierstein (1772-1830) continued his workshop until at least 1825.
Hope this helps!