Hello I have these three 1970 S are they small or large date? I think they are all large dates, I'm hopping one is a small date since I need one for the whitman album and they are oddly expensive. The first and second are proofs and the third is some regular strike.
They are relatively of low mintage, making them a bit harder to find. Somebody correct me if I'm wrong, but the 1970 S proof coins have a mintage of 690,560,004, only 10 to 15% were minted as small dates. So about 250,000 are out there somewhere. Have a look at PCGS' site on this matter: