I've never found a planchet during a CRH event. Found what I thought was a planchet (briefly), but soon noticed it was smaller and underweight. Probably a ball marker for golf.
There are two types. I think that those with a raised rim are Type 2. Those without are Type 1 and have not made it to the upsetting machine yet.
Looks like a winner to me! Still looking for my first one but I don's search 500 rolls a day like you do!!
You should counter stamp that one with your favorite gal and set it free. Very nice find. Thank for sharing. Are you grading it?