Rarity: Extremely Rare

Notes:
The 1804 Cohen 3 is actually an early die state of the "Spiked Chin" die, before the damage to the die occurred that created the "spike".

This variety was discovered by Walter Breen in 1853.  Roger Cohen listed the variety in his First Edition of "American Half Cents - The 'Little Half Sisters' (1971).  After discovering that this was an early, undamaged state of the dies, Cohen delisted the variety in his 1982 Second Edition.

In 1982, Cohen knew of three examples.  In 1983, Breen listed only two examples.  A few more examples have been discovered since, most notably the EAC 2004 coin (which sold for slightly over $10,000) and an unattributed example that appeared later in 2004.

Images courtesy of Ed Fuhrman

Known examples:
NGC F-12 Brown (illustrated above).  Teletrade "Auction 1919" 2004:1001 (unattributed), sold for $198.00 - Ed Fuhrman.

"VG-10".  EAC 1995:109 - Bill Weber - Midwest collection.  Plated in Manley.  Details of F-15, but scratched and cleaned (per Furhman).

"Very Good".  Walter Breen - "California collector".  The discovery coin.  Plated in Breen.

"Fair".  Missouri collector.

"Good-5".  EAC 2004 - Ron Manley

Grade unknown.  Wingo collection (per Manley) - RB (per Fuhrman)

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

"The Half Cent Die State Book 1793-1857" by Ronald P. Manley, Ph.D., pages 117-118

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

"Discovery of an Unatributed 1804 C-3 'Spikeless Chin'" by Ed Fuhrman, PENNY-WISE, November 2004, pages 310-311

Relevant collector organizations:
Early American Coppers Club