Jaime Hernandez: The 1983 No S Proof Roosevelt Dime is the third and last No Proof S coin struck in the Proof Roosevelt Dime series. Most coins exist with Deep cameo surfaces since most Proof Dimes from the 1980s also had proof Deep Cameo surfaces.
The other two Proof No S Dimes are the 1968 and 1970 No S Dimes. The 1968 Proof No S is the scarcest from all three Proof No S coins. The 1970 and 1983 No S Proof Dimes compare in scarcity as there are several hundred examples in all grades combined believed to exist.