Image of the coin. All images  TheFakePoundCoinDatabase unless otherwise stated.
(Click to enlarge)
Coin ID : DISC 1 Year : None Weight : 8.40g / 9.5g
Design : None Motto Type : Others : Blank Diameter : 22.46mm / 22.5mm
Notes : Apparently used to fool Metro ticket machines in the 1990's.
MAGNETIC!!