Last month RM Auctions offered up the 427 Cobra prototype at its annual auction in Phoenix, and although it failed to meet reserve price, the final bid of nearly $1.5 million signified the importance of the car. Fortunately for car collectors who still want to add a notable Shelby to their garage will have the chance at RM's auction next month. A 1964 Shelby Cobra, chassis CSX2557, will be crossing the block during the sale coinciding with the Amelia Island Concours on March 13.
Just one of 42 289-powered racecars and one of only six "cutback door" factory team cars, CSX2557 was built to race in the U.S. Road Racing Championships (USRRC). Much of the design foreshadowed the later 427 Cobras like the widened fenders, larger intakes and side exhaust pipes. Although this particular car had a limited race history in the hands of Shelby, it is one of the most original examples in existence and is in excellent condition thanks to a restoration in the mid-1990s. You can read more about the history of CSX2557 and the other Cobra racecars after the jump.