| Number of sales | 3 | Highest sale | $242,000 |
| Average sales value | $206,250 | Lowest sale | $170,500 |
| Auction Results For 2008 | Results | Auction |
| 1957 Pontiac Bonneville Convertible (No reserve) 347/315 HP, Fuel Injected Convertible | $240,000 (not sold) | 2008 Mecum |
| 1957 PONTIAC BONNEVILLE CONVERTIBLE | $170,500 | 2008 Barrett-Jackson |
| 1957 Pontiac Bonneville Convertible Chassis Num: P857H33383 315hp, 347 cu. in. engine with Rochester mechanical fuel injection, Hydramatic automatic transmission, independent front with rear semi-elliptic leaf springs and four-wheel drum brakes. Wheelbase: 124' | $242,000 | 2008 RM Auctions |