This is a stamp from my collection.

After a long interest in Roosevelt proofs, I decided about a year ago, to buy one set. I purchased a set from Siegel that was sold as 40P2-47P2. This stamp was included as the 10 cent stamp. When I examined it it was clearly not a 43 but more like a 68. I notified the auction house to see if perhaps they just sent the wrong stamp. They said no, this is the way the set was given to them. They offered me a refund for either the set or the one stamp, but I decided to keep it. I found a replacement for the 43P2 and now I had one nice extra proof.
Until recently I believed this to be a 68P2. After my recent studies however, I see this does not match any stamp in the Roosevelt album - at least not from what I know about them. The 40-47P2 series stamps have small margins, but the 1861 series stamps have wide 4-5mm margins. This stamp looks like the later stamp but with a narrow margin like the earlier stamp.
Head scratcher for sure.
Possibilities I can think of:
1- forgery - someone took another stamp - say a 68P3 and stuck it on a piece of cardboard to fill in a gap in his set and hope no one noticed.
2 - a legit 68P2 from an album that for some reason used narrow margins for the 1861 pages. Certainly possible, but no such examples are documented.
3 - a legit Roosevelt stamp but from a version of the album where the wrong die was used on the 1851 page. There are other errors like that known, but again, no documentation of such a case for this stamp.
4 - a waste product from the album production - an error that was found and not used, but someone got into the wild.
I doubt this will be easy to resolve. Because the stamp is glued to the cardboard a careful examination of the paper to see if it is the correct white wove paper used in the Roosevelt album looks difficult to achieve.
I'd be interested in your thoughts. At this point I'm assuming it is option 1, but it is certainly an odd thing to do. If you're going to make a forgery to complete a set, at least use the right stamp. If not for that purpose, making a forged Roosevelt proof is just odd to begin with. But at this point, I'm going on that assumption.
Hmmm.
Rick