Jaime Hernandez: On May 2000, Frank Wallis from Arkansas discovered the first authentic mule known on a U.S. Coin - a 2000-P Washington Quarter obverse struck with a reverse of a Sacagawea Dollar. A mule is the combination of two dies which were never intended to be paired together.
Over the years, several other examples of these authentic mules have surfaced. To this day, 11 authentic examples have been verified to exist. In the year 2000, the discovery coin sold at the ANA Convention for a price of $29,900. After the first sale, several other examples have also sold privately for much larger figures with most of them being over the $50,000 range. The highest reported sale price for one of these "mules" was $155,250 (achieved by the eleventh known example in August 2012).
Mule #1. The "Discovery" specimen, found in Mountain Home, Arkansas by Frank Wallis. Originally sold by Bowers & Merena Auction Galleries at the 2000 ANA Philadelphia Millennium Sale for $29,900. Purchased from Dwight Manley by Fred Weinberg in late June 2001 and then sold to Tommy Bolack for $67,000.
PCGS MS-66 (Die Pair #1)
Mule #2. The "eBay" specimen, sold by Delaware Valley Rare Coin Co., in Bromall Pennsylvania for $41,395 in July 2000. Purchased at the Heritage Numismatic Auctions Signature Sale held June 1, 2001 at the Long Beach Coin Expo for a then-record price of $56,350 by Tommy Bolack.
NGC MS67 (Die Pair #2)
Mule #3. The "Heritage Auction" specimen, sold in the Heritage Numismatic Auction Pre-ANA Sale August 6, 2000 for $31,050. Then into a private collection after being purchased off an eBay Auction in October 2000. Currently owned by Tommy Bolack.
NGC MS66 (Die Pair #2)
Mule #4. The "Margolis" specimen, originally from Fred Weinberg of Encino, CA. Sold by Arnold Margolis to a private collector in September 2000 for $47,500.
PCGS MS65 (Die Pair #1)
Mule #5. The "Greg Senske" specimen, found in Cape Girardeau, Missouri. This coin was discovered September 2000 in change from a cashier at a cafeteria, and was in a 25-coin roll of Sacagawea $1 wrapped in a U.S. Mint-designated paper wrapper. This piece is not on the market at this time.
NGC MS67 (Die Pair #3)
Mule #6. The "Fred Weinberg" specimen, discovered on the East Coast in June 2000 and sold by Fred Weinberg at the Long Beach Coin Expo October 5, 2000 for $50,000 to an anonymous collector. Purchased in May 2003 for $75,000 by Tommy Bolack.
PCGS MS66 (Die Pair #1)
Mule #7. The "Philadelphia" specimen, purchased by Tommy Bolack from Maryland Coin Exchange in early February 2001 for $48,000. MCE purchased this piece from the man who discovered it in a roll of dollars in July 2000 in Pennsylvania.
NGC MS64 (Die Pair #2)
Mule #8. The "Tommy Bolack-1" specimen, purchased in June 2001. The purchase price was not disclosed.
Mule #9. The "Tommy Bolack-2" specimen purchased in July 2001. The purchase price was not disclosed.
Mule #10. The "Treasury" specimen, first reported in August 2001 by a convenience store owner who received it in payment in his downtown Philadelphia store in summer 2000. It was taken by Treasury Department officials in August 2001 to verify authenticity and to examine the piece at the Philadelphia Mint. It was returned by the Treasury Department in October 2001 and subsequently purchased by Fred Weinberg, who sold it in November 2001 to Tommy Bolack for $70,000.
NGC MS65 (Die Pair #3)
Mule #11. Apparently a new discovery, sold in the August 2012 Stack's-Bowers sale for a record price of $155,250.
NGC MS70 (Die Pair #1)