This is the lot photo from the auction. My Kindle takes awful pictures, so this will have to do for starters. It never occurred to me it wasn't round or wasn't meant to be at the time. The other 2R in the lot were round and my catalogue wasn't new enough to have it in it then.

I'd be more than willing to take other measurements or try to get photos later with my Mom's smart phone. This mystery is more than my OCD can take!
Edit- Hope that clears up which coin I'm asking about.
