In many of the discussions I've read on the forum, collectors have said that this or that stamp was their personal favorite. That sort of thing interests me very much, so I thought it might make an interesting thread.
What is your single all-time favorite stamp? Can you pick just one?
My personal favorite is (and always has been) Algeria Scott #247 (Yvert & Tellier #297), issued for the
XIX Congrès International de Géologie in Algiers on 8/11/1952, and featuring an ammonite fossil,
Berbericeras sekikensis. It was designed and engraved by Pierre Gandon. There's something about the overall design that (to me, anyway) invokes an exotic feeling. Not to mention that fossil collecting and stamp collecting were my two youthful passions, so this was a nice crossover!

