Ron Guth:
The 1930 Standing Liberty Quarter Dollar is the most common date of the series in Mint State. PCGS alone has certified over 4,000 Uncirculated 1930 Quarters, most often in MS-64 and usually with a Full Head. High grade examples feature a crisp, sharp luster and great eye appeal in a variety of untoned and toned formats.
According to the June 1934 issue of The Numismatist (p. 416), collectors could still purchase Uncirculated 1930 Quarter Dollars for "the face value of the coins and an amount sufficient to cover the mail charrges by first-class mail."