1977 20c Coin - Proof (Toned)

1977 20c Coin — Proof Finish (Toned)

Single Proof Finish (Ex-Proof Set) 20c coin struck by the Royal Australian Mint. Supplied in a brand-new 2x2 Mylar coin flip for protection.

Coin Specifications

• 1977 20c Coin featuring Stuart Devlin's iconic Platypus reverse design.
• Ex-Proof Set Specimen: Sourced directly from an official 1977 Royal Australian Mint 6-Coin Proof Set, displaying deeply polished mirror fields with natural toning.
• Obverse proudly showcases Arnold Machin's 2nd portrait of Queen Elizabeth II with crisp frosted detail.
• Condition Standard: Struck to Proof standard using hand-prepared dies and high-pressure strikes.
• Catalogue Reference: Numista N# 1003.
• Mintage Information: Total mintage of 55,006 proof sets produced for 1977.
• Technical Specs: Cupronickel (75% Copper, 25% Nickel), 11.31g weight, 28.52mm diameter, reeded edge.

Please Note:

• Package Contents: This listing is for a single toned proof 20c coin only, supplied in a protective Mylar flip.
• Toning Assessment: Displays distinctive, natural toning across the mirror fields developed over decades of vintage set storage, as imaged.
• Image Note: Images reflect the exact coin available for purchase.

About this Coin

The 1977 proof 20c coin is a popular release celebrating the Silver Jubilee year of Queen Elizabeth II's reign. Sourced directly from an official Royal Australian Mint Proof Set of 55,006 produced, this specimen has developed a striking, natural toning over the decades. Combining Stuart Devlin's classic platypus design with deep proof mirrors and unique toning, it offers an eye-catching addition for any Australian decimal proof date run.