A white leather prototype belt signed on the back by Elvis Presley. The belt was designed by Bill Belew, who sent this belt to Elvis with this message written on back: "Elvis this is sample of eagles I'll use. Ok with you." Elvis wrote in response "Ok Elvis." The belt, with six gold tone bald eagles with American flag emblems, was for Presley's costume for the 1973 Aloha from Hawaii concert. The belt was returned to Belew to complete the final costume. The belt is accompanied by a letter of authenticity from Joe Esposito.
source: Julian's, and Wikipedia