1927-S Full Head Standing Liberty Quarter With only 396,000 ever produced, the 1927-S had the lowest mintage of the Standing Liberty quarters.
It is estimated that about 3,900 of these were Full Heads. Today, 65 Full Heads are known, but only two are finer than this one, which is why it's a valued collector's item.
1919-S Full Head Standing Liberty Quarter While 1,836,000 quarters were produced in San Francisco in 1919, the date on many of these has worn off.
1901-S Barber Quarter The San Francisco Mint produced 72,664 quarters in 1901, and most of them were placed in circulation.
With regional circulation heavy in the West, very few of these coins survive in mint condition, with only two certified mint by PCGS and two Superb Gems by NGC.
1927-S Full Head Standing Liberty Quarter The 1927-S is one of the rarest of the Standing Liberty quarters. These coins possessed some of the weakest strikes, due to the complexity of the design, which resulted in dies being clogged with metal shavings
Quarters produced at the San Francisco Mint had more quality control issues with this coin than other mints, resulting in fewer coins being produced there.