1820 25C Small 0 AU58 认证号03248152, PCGS号5328

1820 25C Small O AU58 PCGS. B-4, R2. Population (PCGS 8/9, NGC 1/1). The relationship between the quarter and half dollar during this era is similar to that between the half cent and large cent. The larger denomination was preferred in commerce, and had significantly higher mintages. Aside from the 1815, the 1820 is the lowest mintage year of the Capped Bust half series. Yet its mintage of 751,122 pieces is more than five times that of the 127,444 quarters struck that year. The date has a small 8, star 7 points to the lower part of the cap, and the I in PLURIBUS is centered under the left stand of the second T in STATES. Splashes of blue, olive-green, and purple intermingle over quite clean surfaces that retain a fair amount of luster. Sharp definition is apparent on all of the design features.

Ron Guth

1820 Quarter Dollars are divided into two major varieties: Large 0 and Small 0, both referring to the size of the final digit of the date.  The Small 0 variety is comprised of the Browning 4 and Browning 5 varieties.  For the Large 0 variety, PCGS recognizes Browning 1, Browning 2, and Browning 3.  Tompkins (2008) calls Browning 3 a Medium 0, which is justifiable: on the Large 0's, the inside of the 0's is oval in shape; on the Medium 0 and the Small 0's varieties, the right and left sides on the inside of the 0 are straight while the top and bottom are rounded.  However, PCGS does not recognize the Medium 0 as a separate major variety.

Here's an attribution guide for 1820 Quarter Dollars:

Large 0 will have Large Stars
Small 0 will have Small Stars
Mediium 0 will have Large Star and a short serif at the top of the 1

Sources and/or recommended reading:
Tompkins, S.M. (2008).  Early united states quarters 1796-1838.  Sequim, WA: Destni, Inc.