The OP's "stamp" is a toy stamp or kinderpost stamp, part of a kid's toy post office play set with midget "stamps", cancelers, ink pad and (I think) envelopes and even imprinted postal cards. So yes, a cinderella and sometimes found on real mail.
You will see stamps sometimes inscribed "Liliput", "Kinderpost" (children's post) or "toy post". The stamps are all tiny rough imitations of current stamps of the time, perfed (perf 8-9 or somesuch), usually off-center. I don't know if stamps were specific to country sold but most I've seen were imitations of German stamps.
Like this (about 4x actual size).
And it looks like the concept goes on, From the Swiss post office:
https://www.postshop.ch/en/Products...er-KE_507512
Posted 12/10/2011 5:53 pm
