Significant examples:
PCGS Fine-12. Ex - Ira & Larry Goldberg Coins & Collectibles, Inc.'s "Benson Collection, Part I", February 16, 18-20, 2001, Lot 1725, "Overton-107, Rarity-5", illustrated, sold for $6,612.00 Purchased in March of 1992 from an unknown source."
Sources and/or recommended reading:
"Early Half Dollar Die Varieties 1794-1836", Third Edition, by Al C. Overton and Don Parsley
"Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins" by Walter Breen
"The PCGS Population Report, July 2004" by The Professional Coin Grading Service