The San Francisco Mint produced the only branch-mint offering for the one-cent coin in 1923, and it was a relatively low-mintage issuance at that, with fewer than 9 million S-mint pennies struck that year. Still, it is not considered a semi-key date and is a common coin, especially in the circulated grades. There is an ample supply of 1923-S Lincoln cents in Brown and Red-Brown uncirculated grades up through at least MS64.