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PCThe front looks real, but the back is really weird. The surface is too rough, as if the card was skinned.
This is a wild guess, but is it possible that this was a Drum test print, printed on the back of a skinned card or sheet? That might explain why the printing looks like it bled across the fibers on a rougher surface.
But I doubt it. If it is a forgery, it is one of the oddest I've seen.