The "Blue Penny" is a famous postage stamp from Mauritius, issued in 1847. It is notable for its unique blue color and is one of the world's rarest stamps. The stamp features a design of a sailing ship and was printed in limited quantities, making it highly sought after by collectors. The "Blue Penny" is valued not only for its rarity but also for its historical significance in the world of philately. It was one of the first stamps issued in the British Empire and represents the early days of postal services. Its iconic status has made it a symbol of stamp collecting.