POSTCARD Postage Stamps Seashells 1 Sheet of 20 USPS First Class Forever Sand Sun Beach Fun Ocean (20 Stamps)Category: Hong Kong Postage StampsCelebrate the fun and beauty of seashells with four new postcard stamps from the U.S. Postal Service. Whimsical and lighthearted, the stamp art features stylized depictions of four seashells: the alphabet cone, the zebra nerite, the Pacific calico scallop, and the Queen conch, frequently called the pink conch. The horizontal swaths of white and blue in the background suggest waves washing the shells onto a beach. The hard, protective external skeletons of marine mollusks, seashells are composed largely of calcium carbonate secreted by the mollusks, mantle. Frequently ornamented with arrangements of ribs, spines, cords, scales, and grooves, the shells provide protection against predators, aid in burrowing into the sand, and give support to the soft-bodied animals. Seashells have served many purposes throughout historyas jewelry, decoration, cooking vessels, lamps, even currencybut they were also highly collectible as objects of beauty and scientific study, as they are today. Around the world, clubs and shows attract enthusiasts, who continue to collect shells for their elegance, beautiful colors, and rich variety of shapes. Art director Greg Breeding designed the stamps. Sergio Baradat created the stamp art. The word "POSTCARD" on the stamps indicates their usage value. Like a Forever stamp, these stamps will always be valid for the rate printed on them. The word "POSTCARD" on the stamps indicates their usage value. Like a Forever stamp, these stamps will always be valid for the rate printed on them.