Bishoproic Of Breslau 15 Kreuzer 1693

@tdz, I wonder if this coin spent a considerable amount of time in saltwater. How is the weight? I agree that the surface is off. Here are a couple similar coins minted around that time in Breslau for comparison:








As you can see, my '93 15 Kreuzer also has a patch of roughness on the rev, but it looks different from yours.

Thanks for moving this topic to a place where it would get this good discussion, and the comparison to other contemporary coins.

The auction house is about 300 km from Breslau/Wroclaw/Wratislava, so I expect they see a fair amount of Silesia coins, and (hopefully) would recognize a fake. But I do not have the weight, so this did make me think a bit.

I probably need to learn more about the roller die process. Many (but not all) coins I have made by this process tend to lack definition, sometimes while showing a lot of luster, suggesting very little circulation wear. And I don't know what was going on with silver quality in this era, but Polish szostaks (6 groschen coins) from the 1680s often have black streaks and other planchet flaws even worse than this (on the World Coin Grading subforum, I showed a slabbed coin from this era where the flaw goes completely through the coin).

Despite what shows in the photos, (and thanks to my deteriorating eyesight), this coin actually looks pretty nice in hand