Possibly Numismatic Galleries 3/1948:711 (per Breen) - Gaston DiBello Collection - Stack's 5/1970:1281 - Harry W. Bass, Jr. Collection - Bowers & Merena 10/1999:1906 (as PCGS Proof-67), $166,750 - Clausen Family Collection - Heritage 1/2006:3581 (as NGC PR68*UCAM 1704497-001), $299,000 - Tacasyl Collection - Bonham’s 9/2013:1023, $655,200