1923, COSTA RICA unused UPU 4 Cent green wrapper Impresos Correos Costa Rica showing a PINEAPPLE (fruit ananas piña). Vertical crease fold nonetheless in very good quality for the EXTREMELY FEW EXAMPLES KNOWN. As H.D Mitchell writes ” The wrapper is surface printed in green on a poor quality of Manila. This latter fact may have something to do with the present scarcity of the item for the paper employed is anything but durable”. H&G give a treble RRR rating for this EXCEPTIONALLY RARE PIECE. One of the highest ratings, seldomly used by H&G. According to the 1998 handbook Costa Rica Postal Stationery 1883 - 1953 by H.D Mitchell he writes ”I HAVE ONLY SEEN ONE UNPOSTMARKED EXAMPLE - THIS IS ONE OF THE SCARCEST OF ALL COSTAN RICAN STATIONERY”. It is also probably also the rarest topical item regarding PINEAPPLE. A MAJOR COSTA RICA POSTAL STATIONERY RARITY.