Palladium is a precious metal in the platinum group. Like platinum, it is used in jewelry, and as a catalyst in chemical reactions. Palladium coins have been issued by a handful of countries, as commemoratives or presentation issues rather than for circulation. In 1966 Sierra Leone produced 100 palladium coins as part of a production run of gold coins. The first official palladium issue was a 3-coin set in 1967 by the Kingdom of Tonga.
Lewis & Clark palladium bullion round, proof, Stillwater Mint. Diameter 20mm, 3.1g (1/10 Troy oz), .9995 pure. $50 on eBay 5/11/2006.
Palladium medal by Metallium, Inc. Photo used by permission.
Diameter 19 mm, 3.1 grams (1/10 Troy oz), 99.9% pure. $80 on 7/6/2006.