Howmet Auctions
| Howmet | 1968 | 1968 Howmet Turbine Race Car | 13/05/06 | sold | $264,000 | RM Auctions - Sotheby's |
| Howmet | 1967 | 1967 Howmet GT Sprint Racing Car | 13/03/04 | sold | $30,800 | RM Auctions - Sotheby's |
| Howmet | 1968 | 1968 HOWMET TX GAS TURBINE POWERED WORLD CHAMPIONSHIP ENDURANCE RACING COUPE | 15/08/03 | rnm | $0 | Bonhams |
