ALEKS wrote:Theoderich---Thank you so much for your help. I watched Tilsit, but there is an asterisk under the number 12, and this confused me.

Now, the 12 Lot-Mark in Tilsit is soy the same like this on your spoon, but it could be that both stamps are made of the same stampmaker.
Insterburg is nor far from Tilsit.