Diller Essenz "Kaffee Zusatz Essenz" (literally "coffee additional essence"). It is basically flavoring to add to ersatz coffee to make it more palatable, Think bouillon cube for coffee. The one in this listing is empty, but we did find one with the contents (picture with contents shown for reference - the tin you will receive is empty).
It is in fairly good condition with some light wear. The lid has the most wear. The bottom is stamped 310.
