Recent appearances:
NGC VF-35.  Superior's sale of the Jack H. Robinson Collection, January 1989, Lot 395 - Bowers and Merena Galleries' Robert W. Schwan Collection Sale, October 26-27, 2000, Lot 119 at $48,300.00, "Sheldon-188, 1799/8, Brown"

Fine-12.  Stack's "The September Sale", September 12-13, 2000, Lot 70, $4,140.00

VG-10.  Heritage Numismatic Auctions, Inc.'s "Santa Clara Signature Sale", November 16-17, 2000, Lot 5047, "Sheldon-188, Rarity-4, 1799/8, illustrated, sold for $4,600.00

PCGS VG-10.  Bowers & Merena Galleries' "The Rarities Sale", January 3, 2001, Lot 29, "B-2, 1799/8", illustrated, sold for $6,440.00

VG-8.  Ex - Bowers and Merena Galleries' Robert W. Schwan Collection Sale, October 26-27, 2000, Lot 120, "Sheldon-188, 1799/8", illustrated @ $3,220.00

AG-3, Porous.  Ex - Heritage Numismatic Auctions, Inc.'s "Long Beach Signature Sale", May 31-June 2, 2001, Lot 5372, not illustrated, sold for $920.00 

Sources and/or recommended reading:
"Penny Whimsy" by Dr. William H. Sheldon

"Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins" by Walter Breen

Relevant collector organizations:
Early American Coppers Club