The three-dimensional effect of my bat stamp for the Swiss Post

The technique makes it possible: My bat (as like in the
Nature) has a three-dimensional plasticity! She is so fine and realistic that
they can be seen only on the second moment. A temptation for everyone
philatelic fingers :-)!
This special edition is only available this month and only about the
Store sales of the Swiss Post (not available from post offices).
Goes two posts back to seen the whole stamp...