Im assuming it wouldnt have any real value either way. Just curious as to if its unique, or fake haha
I will have to check some of mine also. I did a quick search on the inter webs,and saw plenty of misc reverses a couple Denver that had a close am, I figured that it was a proof vs Bus. strike.
Die wear and/or polishing can make features further apart, it won't make them get closer together. I don't know enough about changes in the rev hub over the years to know if there were earlier versions with a close AM before 92