This label was in a collection donated Yesterday to our local stamp show. The question is, What Is it?

The margins on the actual label are larger than shown in the image, so it is probably not a trimmed "stamp". A note with it says "ESSASY?". The image is about 0.75" wide and 0.91" high.
Our first thought, since it does not include a country name, was that it was from a toy post office set. Alternatively, it may cut from an envelope which had the country name printed separately from the inducium. I have searched through the old Ascher catalog without finding a match.