The Fake Pound Coin Database
(Click to enlarge)
Coin ID : 20P	Year : 1983/1984	Weight : 6.32g / 5.0g
Design :	Thickness : 1.77mm / 1.7mm	Diameter : 21.33mm / 21.4mm
Notes : Purchased in September 2017. Part of a small group found in a river in London.