1771 Double Sided?

Hello. It appears this stamp did not get cut wright in printing process? It has double sides.

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Not possible - someone must have affixed one on the back of another.

I bet if you check closely, you will see two stamps back to back.

There seems to be no seperation on the perf holes?

Most definitely back-to-back stamps. Look at the last picture, lower left corner. You can see overlap in the perf holes.

Very good attempt at a manufactured error!

For a true error, there would be at least 50 of these (or 200), so at least 49 out there somewhere in addition to this one. There are not.

This is simply two stamps back-to-back. It looks very suspicious as a single with extra selvage, etc.

If after you examine it in more detail, submit it to an expertization agency if not convinced of it being a fake error. Because if it is a real error, it is surely very scarce. But I wouldn't.

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As Partime mentioned, you can clearly see the overlapped perforations on the lower left corner of the stamp in the top scan of your last posted pics, and also whetted perforation tips!

I pulled this out of a bag of unsorted bought collection. The gentleman was a collector from the 50's and 60's..this was just thrown in a big bag of mixed. I don't know how they lined it up so good!

Throw in a cup of water and you'll double your money :)

It seems to me that it is obvious from the selvage (alluded to by orstampman).

So you all think someone affixed another one to the back of this one? What about the odds of it just naturally lining up front and back? I think naturally aligning like that would not be a possibility. Someone really took their time on this, if that is the case! And why would they attempt this on such a stamp? A lot of time on their hands!

Most likely not an attempt to create an error, just a simple accident. Since the stamps are comb-perfed, every stamp in the pane has exactly the same perforations. Folks fold several stamps together and put them in wallet, purse, or desk for future use. Without protection between the stamps, it only takes a humid day to stick the stamps together.

Anyone know what the perf is on a normal Martin Luther?

Also, in bright light, I can see a very, very light silhouette of his head and shoulders, doesn't seem like the portrait is lined up with the other side.