Although the 1924-S Buffalo Nickel is not as scarce in all grades as the 1926-S, it is rare in high mint state grades. The coin had a comparatively higher mintage of 1,437,000, but most pieces entered the channels of circulation soon after production. Other low mintage Buffalo Nickel coins have also tended to be from the San Francisco Mint, with several issues in the 1.5 million mintage area.
The 1924-S Buffalo Nickel is often encountered strongly struck, a rare occurrence within the series, and eye-appeal is usually high for this issue. Finding a high grade example however, is not easy and pieces often bring strong prices. One of the finest known examples, graded NGC MS 66 with star designation, realized $20,125 at auction.
taken from: http://buffalonickel.org/