One of the most frequently encountered Saint-Gaudens coins is the 1924 Philly $20. Plentiful in circulated condition and even up to Gem, one who seeks an example -- even an especially nice piece -- should have little trouble locating it. MS66s are readily available, and there is a small but significant supply of MS67s. A tiny handful of examples are known in higher grades, and these often trade for huge premiums, particularly when registry set collectors get involved in the bidding.