Australia 1956(p) penny
This specimen was part of lot 40412 in Ponterio sale 168 (Philadelphia, August 2012), where it sold for $2,820. The catalog description noted, "AUSTRALIA. Penny, 1956. Perth Mint. NGC PROOF-63 RB. Mintage of only 417 pieces." None of the proof pennies of the fifties are common but this one, along with the 1955 proof from Perth, is the key. The Melbourne mint also issued proofs.
Recorded mintage: 12,121,000 plus 417 proofs.
Specification: bronze, 30.5 mm diameter.
Catalog reference: KM 56.
- Cuhaj, George S., and Thomas Michael, Standard Catalog of World Coins, 1901-2000, 42nd ed., Iola, WI: Krause Publications, 2014.
- McDonald, Greg, The Pocket Guide to Australian Coins and Banknotes, 23rd ed., Lavington, Australia, 2017.
- Ponterio, Richard, Ponterio sale 168: The Official ANA Auction, Irvine, CA: Stack's Bowers LLC, 2012.