1817 O-101 7 over 3 R2 Capped Bust Half Dollar.

Obverse: 1
Reverse: A
O-101 R3 is below, O-101a R2 at bottom
The most pronounced overdate of the Capped Bust series. There are plenty of these that have survived, with the later die state being more common, but demand is such that this overdate is quite valueable, especially in XF grades and above. The finest of this marriage is a single MS66, but there are several other MS examples at the top of the census.
1817, O-101, 7 over 3, Capped Bust, Half Dollar
1817, O-101, 7 over 3, Capped Bust, Half Dollar
1817, O-101, 7 over 3, Capped Bust, Half Dollar
1817, O-101, 7 over 3, Capped Bust, Half Dollar
Variety Attribution: Obverse- 1817 over 13. Stars are sharp. Date is 9 mm. and evenly spaced. The 3 is sharp below the 7. The great majority show several pronounced die lumps. One below star 13, others at back and above cap and above star 7. There are a few specimens, however, that do not show these die peculiarities.

Reverse- 50 C. is 1 3/4 mm. Arrow to A slightly over 1/2 mm. Right sides of T-I in line. Most specimens exhibit several die lumps, a large one inside 0 of 50. Also around 50 C. and olive leaves. However, they are usually absent on those that do not show the obverse lumps. Center dot between crossbars 4 and 5.

O-101a: Die crack from edge above M down across ME, tip of right wing, claw, arrowshafts, and top of 50, then across tip of olive leaf to edge. Late states also show a fine crack from leaves through UN and to edge above E in UNITED.

1817/3 Date Closeup
1817/3 Date Closeup
Distinguished by a very defined 7 over 3
1817, O-101a, 7 over 3, Capped Bust, Half Dollar
1817, O-101a, 7 over 3, Capped Bust, Half Dollar
1817, O-101a, 7 over 3, Capped Bust, Half Dollar
1817, O-101a, 7 over 3, Capped Bust, Half Dollar
1817 Leaman-Gunnet Emission Sequence Number for O-101: 1
Overall Number: 83

Notes:
According to Edgar Souders, he estimates that the projected mintage for this overdate is approximately 93,505. Get his book Bust Half Fever and read all about overdates and how he came up with the number!
This is one of the 1817's made from the Design 3 hub 1812-1817.

Top five condition census coins from last 10 years of auction and sale records O-101:
04/09 Heritage (CSNS-Cincinnati)          NGC MS66 (Kaufman)
01/17 Heritage (FUN-Ft Lauderdale)      NGC MS64 (Newman)
08/10 Private Treaty                                 PCGS MS64 PQ
01/08 Stack's (Franklinton II-Orlando)   PCGS MS64
08/13 Stack's-B (ANA-Chicago)              NGC MS63

Top five condition census coins from last 10 years of auction and sale records O-101a:
08/16 Heritage (ANA-Anaheim)               NGC MS64
08/15 Stack's-B (Pogue Part II)               PCGS MS64+
10/14 Heritage (New York)                      PCGS MS64
07/13 Heritage (FUN-Orlando)               PCGS MS64 (CAC) Ex-NGC MS64 01/12
04/13 Heritage (CSNS-Chicago)             NGC MS64