Notes:
According to Ron Manley, the obverse die of this variety is surrounded by 136 denticles.

According to Ron Manley, the reverse die of this variety is surrounded by 140 denticles.

Images courtesy of Gene Braig

Significant example:
"VF-25+".  Ex - Hollinbeck-Kagin Sale 298, September 11, 1972, Lot 617, sold for $485.00 - R. Tettenhorst - Jim McGuigan (sold on January 1, 1986 for $3,300.00 - Dr. Wallace Lee - Superior Galleries "Pre-Long Beach" Elite Coin Auction, May 25-27, 2003, Lot 264, sold for $16,100.00 - New Jersey collector.  The plate coin in Walter Breen's Encyclopedia of U.S. Half Cents

Recent appearances:
ANACS Net G-4.  Ex - Bowers and Merena Galleries "The Rarities Sale, Orlando", January 8, 2002, Lot 10, "B-2, C-1, Rarity-5+, Normal Date. From the Dr. Roy Sturgeon Collection. Purchased from Christopher Young (Chesapeake Bay Rare Coins)," illustrated, sold for $1,495.00 

Sources and/or recommended reading:
"American Half Cents - The 'Little Half Sisters' (Second Edition)" by Roger S. Cohen, Jr.

"Walter Breen's Encyclopedia of United States Half Cents 1793-1857" by Walter Breen

EAC Region 8 Newsletter #244, April 22, 2001

Relevant collector organizations:
Early American Coppers Club