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SERIES: Capped Bust Half Dollars 1807-1839
LEVEL: Year, MintMark, & Major Variety

1820 50C Sq. 2, Lg Date, Knob 2 (Regular Strike)

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PCGS MS64

DATE COMPARISON

PCGS MS63
PCGS #:
6122
Diameter:
32.50 millimeters
Designer:
John Reich
Weight:
13.50 grams
Edge:
Lettered: FIFTY CENTS OR HALF A DOLLAR
Mintage:
751,122
Metal Content:
89.2% Silver, 10.8% Copper
Auction Record:
$21,850 • NGC MS65 • 1-1-2007 • Heritage
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Rarity and Survival Estimates (Explain)
Grades Survival
Estimate 
Numismatic
Rarity 
Relative Rarity
By Type 
Relative Rarity
By Series 
All Grades 1,000 R-5.0 24 / 72 TIE 25 / 78 TIE
60 or Better 40 R-8.7 29 / 72 TIE 30 / 78 TIE
65 or Better 4 R-9.8 19 / 72 TIE 20 / 78 TIE
Condition Census (Explain) Show more rows
Pos Grade Thumbnail Pedigree and History
1 MS66 PCGS grade  
2 MS65 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
Condition Census (Explain) Show fewer rows
Pos Grade Thumbnail Pedigree and History
1 MS66 PCGS grade  
2 MS65 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  
3 MS64 PCGS grade  

Ron Guth: 1820 Half Dollars offer the collector a dizzzying array of possibilities: Large Date, Small Date, Overdate, Square Base 2, Curl Base 2, Knob 2, Plain 2, No serifs on E, and combinations of the preceding.  In this case, we have an 1820 Half Dollar with a Square Base 2, a Large Date, and a Knob 2.  Jse the image above to determine the proper variety. 

According to the PCGS Population Report (as of September 2011), the 1820 Square Base 2, Large Date, Knob 2 is less common than the Curl Base 2, Small Date and the Square Base 2, Large Date, No Knob, but not as scarce as the 1820/19 Square Base 2 and the 1820/19 Curl Base 2. 

Mint State examples of the 1820 Square Base 2, Large Date, Knob 2 Half Dollar are very scarce and the finest example certified by PCGS is a single MS-66.