It was probably soldered to something. It's not an error.
The MM is in the wrong position. Yours is centered between the 9 and 6 The MM on FS501 is more under the 9. Plus it doesn't have the horizontal D...
Thats it!
If it were glue the acetone should lift it. Acetone wouldn't be any help if it was a stain
I lean towards a stain. But it could be a retained strike thru.
Here it is, quite a bit more circulated, and not photogenic. When I found the coin I thought the same as you that it would weigh less and could be...
Can you post the reference? Was it from Cuds on coins?
I agree with PMD.
Yeah, let me find it. The only reason I kept it was for the odd IDB. Give me few.
That is not what a tapered planchet looks like. That I believe is damage from a sorting and counting machine. It happens when two coins are bound...
Not likely, it is rare that a coin in RB or BN gets graded above a RD coin in the same condition.
Here is a pair of 86's both would grade at Red. [ATTACH] [ATTACH] [ATTACH] [ATTACH]
Usually made out of a base metal and silver plated to mimic a real seated.
Since you questioned yourself the die clash left some pretty heavy details.. Here is the MS63....
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