The IPSA%u2019s first set of five stamps, released November 30, 1971. Denominations were 5%u00a2, 10%u00a2, 25%u00a2, 50%u00a2, and $1.00 (which, without a dollar sign, looks like a 1%u00a2 stamp). The 5%u00a2 stamp was for Christmas Cards.