It is a 12pf Schiller stamp from Thuringia under Soviet Occupation (1945). Scott Cat 16N6 and Michel 97. Michel lists a number of paper, color and gum variations.
I can't tell the color or paper variations from the scan and detecting gum variations on a used stamp is tricky at best in person. It does look like a Type 1, with a sharp neckline.
These stamps were used for only a short period of time so the cancellation most likely was applied later. Cancelled stamps from this period are usually considered CTO unless they get expertized which usually isn't cost effective.
Michel doesn't note any forgeries or fakes.
Hope that helps!
Dan
