by dat8962 » Feb 27th, '06, 01:51
The best in my opinion are the 50p and the 2p.
For some reasons the 10p versions never seem to look right and the crack appears to be more visible in the 10p than in others.
Member of the Magic Circle & The 2009 British Isles Close-Up Magician of the Year
It's not really an optical illusion - it just looks like one!