NGC MS68 1966 SMS VP-001 Dime Rare Doubled die Registry Quality Top of the pop variety coin. This the first one graded. This is a very rare coin. I first reported this coin to CONECA about ten years ago. You can see my name listed as such in the files at VarietyVista.com. It exhibits a very nice extra thickness that was achieved through multiple hubbings so close together that they left a tapered extra thickness effect. The following is the description from the website varietyvista.com Medium extra thickness on UNITED STATES OF AMERICA, upper leaves, and flame tips, with light thickness on ONE DIME.