Instantly obvious to any coppahead - it's after 1798, and yet has first hair style.
This is commonplace, even among specialists. I recommend putting a little sticker on it (front or back) to identify O-number for convenience...
We do the same things today, raw or slabbed. Perhaps. Sometimes the fees do seem a little high, particularly attribution. It would be interesting...
What's the rarity on this one ?
It depends on the rarity. If the "R" factor is high enough to command a significant premium, then it's probably worth it. Realize that's $24...
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