Postby Bahner » Tue Jan 29, 2008 4:49 pm
Hello, strictly speaking it could be January 1st, 1888. That was the date when the laws of 1884 and 1886 respectively became effective. But I believe that stamping with date letters was abandoned earlier. Most likely as early as the late 1860ies, when the German guilds were dissolved. Best wishes, Bahner