Stamps honoring Wilt Chamberlain as an American icon will be dedicated Friday in Philadelphia during the halftime of the 76ers-Thunder game. Chamberlain is one of about 30 subjects selected from a list of 40,000 stamp proposals originally generated by the Citizens' Stamp Advisory Committee.

The volunteer began working on Chamberlain's stamp years ago, jumping through an assortment of hoops until it was approved by the postmaster general.

Two different stamps will be sold by the United States Postal Service, honoring two distinct phases of Chamberlain's career: His early years, when he was an offensive giant, and his later years when he evolved into a defensive force.

Chamberlain, who died in 1999, is remembered as one of the greatest basketball players to ever live. The two-time NBA champion is famous for having scored 100 points in a single game.

The commemorative stamps are almost two inches tall -- about one-third taller than a typical postage stamp. The extra size is an homage to Chamberlain's 7-foot-1 frame, although it was also a practical decision.

"We still had trouble fitting him into those proportions," said artist Kadir Nelson to The New York Times.

About 50 million Wilt Chamberlain stamps will be printed -- a high number reflective of the stamp's status with the USPS, which expects the collectible to be one its more popular stamps.

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