Great Britain 1978 50 pence
The first specimen was lot 34190 in Heritage sale 3082 (New York, January 2020), where it sold for $180. The catalog description[1] noted, "Great Britain: Elizabeth II Mint Error - Wrong Planchet 50 New Pence 1978 MS64 PCGS. Struck on 10 Pence planchet." This fifty new pence, or half of a pound, was introduced in 1969 as part of the decimal reform. In the old sterling system, this spot was occupied by the gold half sovereign or the ten shilling note. It was struck in this style until 1982, when the word "new" was dropped from the reverse. The module was reduced to 8 g in 1997. Some dates, such as 1971-75, were struck only for collector sets.
Recorded mintage: 72,005,500 plus 86,100 proofs.
Specification: 13.50 g, copper-nickel, 30 mm diameter, heptagonal.
Catalog reference: KM 913.
- Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1901-2000, 47th ed., Iola, WI: Krause Publications, 2019.
- Lobel, Richard, Mark Davidson, Allan Hailstone and Eleni Calligas, Coincraft's Standard Catalogue of English and UK Coins, 1066 to Date, London: Coincraft, 1995.
- Skingley, Philip, ed., Standard Catalogue of British Coins: Coins of England & the United Kingdom, 46th edition, London: Spink & Son, 2011.
- [1]Bierrenbach, Cristiano, Warren Tucker and Sam Spiegel, Heritage World and Ancient Coins Online Auction 3082, featuring the Caranett Collection, Dallas, TX: Heritage Auction Galleries, 2019.
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