1901 S Barber Quarter KEY DATE, PCGS Certified. Long time collector, over the coming months, I will be breaking up my personal collection, acquired over 50 years of collecting coins & stamps. A great example of a circulated 01 S Barber Atr. The obverse could grade G as rim is clear and some ear details show well. The reverse is more worn, but unlike many AG examples there is a clear and highly visable S mintmark and only heavy wear is around the reverse rim.Another coin that is often. _gsrx_vers_1233 GS 8.1.1 (1233). The item "1901 S Barber Quarter KEY DATE, PCGS Certified" is in sale since Saturday, September 19, 2020. This item is in the category "Coins & Paper Money\Coins\ US\Quarters\Barber (1892-1916)". The seller is "ddoctx" and is located in Austin, Texas. This item can be shipped to United States.