Circulation San Fransico Lincoln Cents 1968-1974

Hi Eric

The San Fransisco mint was put into service during the later part of the cal gold rush it was designed to mint coinage for circulation including at that time fractional gold.this continued through very many coin design changes with most denominations .

Most of the proof coinage was minted in philadelphia prior to the San fransisco mint taking the minting of proof coins as a fulltime operation in 1974 to date,,

Rick