Mecum's annual Indy Spring Classic kicks off on May 19, with 1,750 cars slated to cross the block. Last year, Mecum sold 637 of 1,047 cars for nearly $34m, and a pair of 427 Cobras broke the million-dollar mark.

Top 10 cars to watch for:

1. The Harley Earl 1963 Chevrolet Corvette

2. 1969 Pontiac Trans Am convertible

3. 1963 Pontiac Catalina SD Swiss Cheese

4. 1964 Ford Thunderbolt

5. 1966 Shelby Cobra 427

6. 1970 Dodge Hemi Challenger convertible

7. 2003 Chevrolet Corvette C5R Le Mans racer

8. 1934 Ford Marmon V16 roadster

9. 1970 Riva Super Aquarama

10. 1963 Ford Thunderbird M-code convertible