
There were no proof sets from 1965 to 1967, they are known as Special Mint Sets and have a quality level in between the standard Mint Sets and Proof Sets. If any of those have a cameo effect similar to proof sets, then they can be worth quite a bit more than a regular SMS. As already stated, you grading fees for that many proof sets would run into the thousands of dollars, exceeding the actual value of the sets themselves by many times over. You might have a few high high grade coins there that would exceed the value of an average proof set grade, but bulk submissions like that never come out ahead because you will always have some lesser grade coins as well that are worth the same with or without a slab.
Edited by biokemist6
09/15/2008 12:54 pm