Germany Stamps Deutsches Reich 160 Pfennig Infla Mi. Nr. 190 (18040)
This stamp appears unused, but there's a tab on the back that indicates this stamp was hinged. Slight wrinkle, probably caused by removing stamp from said page, which is more noticeable from the back than from the front. No noticeable cancellation stamp, also no noticeable gum on back.
Showing front and back on this stamp in photos.