What 1970 s coin is better to keep the large date or the small date and the 1960 large date or small date. Thank you all for your input.
IMO, 1970-S Small Date. I have no idea about the 1960 Small Date other than there are a lot more of them out there than folks are aware of.
The 1970-S small dates are scarce in both proof and business strikes. For 1960, the P issue small dates are slightly scarce, D issues are common in both large and small dates.