Rick4691 said:excuse my ignorance but what is the difference?
Rick4691 said:were these minted in any particular year?
It is said that there are many forgeries of this coin circulating. Word is the crooks take a regular 1966 London 20c and apply some sort of heat treatment to "bend" the metal. You need to make sure the bump in the baseline is mirrored in the wave above it.
SovereignBuyerMelbourne said:who would you sell this to if you found one?