1990 No S Proof Lincoln Cent PR68RD DCAM PCGS. FS-101. You will have to search long and hard with a good loupe to spot the only apparent reason for a 68 grade that we could find, the most tee-tiny more-than-minuscule little scrape above (C)EN(T) in the reverse field. This is a great-looking example of this popular and in-demand No S cent error, and a heck of a lot of coin for the money. We had two of these, the other one PR69DCAM PCGS, which just sold; there is very little difference between them except that this one is two grand less.