1820 HALF DOLLAR
Mintage:
Circulation strikes: 751,122
Proofs: est. 5
Designer: John
Reich
Diameter: ±3233
millimeters
Metal content:
Silver  89.2%
Copper  10.8%
Weight: 208
grains (13.48 grams)
Edge: Lettered
("FIFTY CENTS OR HALF A DOLLAR")
Mintmark: None (for
Philadelphia)

Varieties:
Overton 101  1820/19,
Square Base 2
Overton 102  1820/19, Curl Base 2
Overton 103  Small Date, Square Base 2
Overton 104  Large Date, Square Base 2, Knobbed 2
Overton 105  Large Date, Square Base 2, Knobbed 2
Overton 106  Large Date, Square Base 2, Unknobbed 2
Overton 107  Large Date, Square Base 2, Unknobbed 2
Overton 108  Large Date, Square Base 2, Unknobbed 2
Recent appearances:
See variety listings
Notes:
The finest "Curl 2, Small Date" examples graded by PCGS are
3 MS65's.
The finest "Square 2, Large Date" example graded by PCGS is a
single MS64.
The finest "No Knob" example graded by PCGS is a single MS65.
The finest "1820/19 Square 2" examples graded by PCGS are 4 MS64's.
The finest "1820/19 Curl 2" example graded by PCGS is a single
MS65.
Sources and/or
recommended reading:
"Early
Half Dollar Die Varieties 17941836", Third Edition, by Al C.
Overton
"The PCGS Population
Report, April 2003" by The
Professional Coin Grading Service
