India Birds of Prey error is a modern Indian rarity that displays 1Rs. instead of 2Rs.. The mistake was discovered shortly after printing, with most specimens destroyed. The stamp was supposed to have 2r value. However, a printing error was made, and the stamp got a 1r denomination instead. Moreover, the stamp got the Hindi name of the bird incorrect. The issue was released in 1992 and by 1998 three of the errors had been discovered in Year Packs. It is thought that all other 1Rs. specimens were destroyed by the Indian Post Office. One of the finest examples of this extraordinary stamp was sold for $16,172 at Stanley Gibbons auction in June, 2011.