Vintage coin-like button, with portrait of George 1, inscribed round the rim: GEORGIUS - D.G.M. ET H. REX. FD. This is not made from an actual coin - although the portrait looks like George 1 on coins, there is no date nor coin denomination on the back and the Royal coat of Arms is a modern one rather than the one used on actual Georgian coins. But a nice quality replica

Size 13/16” (2.4 cm)