$1 1935-A Silver Cert, Fr. 1610 S EXPERIMENTAL PCGS Ch Unc 64

In 1944 the Bureau of Engraving and Printing decided to experiment with a new paper for silver certificates. Some 1935-A silver certificates were marked with a red R to designate the regular paper; others were marked with a red S to signify that they were printed on special paper. Thanks to their attempt, we now have terrific collectibles! 

This example has been preserved in Uncirculated condition that's just one point shy of Gem. It has terrific eye-appeal despite a trivial comment of "adhesive residue." Congratulations to the collector that secures this trophy.