15 wow. Great find. I did not know of that. I guess we need to keep in better contact on finds.
Still its a Rarity 7 I feel with up to 30 known.

Heres what I feel is the best one known with very sharp edges- full grain, or crosshatching.

Can you scan one to show me the condition please.
I want to see just how nice they are. I dont see any around that are that nice but for quite used ones with no edge grain left.