In many ways, Corvette enthusiasts are numerologists. They don’t necessarily find the meaning of life in numbers, but when it comes to performance figures, option codes and production totals, they marvel at them as if they were written in the stars. The 2009 GT1 Championship Edition will be forever remembered for a vastly different set of numbers—those associated with a sour economy.

To commemorate Corvette Racing’s success with the GT1-class C6.R, Chevrolet announced it would build 600 GT1 Championship Editions for the 2009 model year. The car would wear hood graphics that incorporated the now-iconic “Jake” skull logo, commemorative decals on the rocker panels, a unique engine cover and special interior embroidery. Though there would be no GT1-specific mechanical enhancements, the base coupe and convertible versions would include the Z51 Performance Package and the NPP Performance Exhaust. These cars would also receive the ZR1-spec rear spoiler. Owners could install the included GT1 windshield banner themselves.

The production breakdown was to be as follows: 200 coupes, 200 convertibles and 200 Z06s. Additionally, the 200-unit runs per body style were to be further divided by color—100 of each in black and yellow.

Unfortunately, the original production plans were scrapped when the bottom fell out of the new-car market. As Corvettes sat unsold, production slowed to a trickle; output at Bowling Green was cut roughly in half, and during GM’s bankruptcy reorganization, production was halted altogether.

When the 2009 Corvette production run ended, only 125 GT1 special editions had rolled off of the Kentucky assembly line: 55 Z06s, 53 coupes and only 17 convertibles. And if you’re really into slicing the pie thinly, pay close attention to these numbers: Of the 17 GT1 convertibles, only seven were painted black; and of those, only three were equipped with the six-speed manual transmission.

Cauley Chevrolet, in West Bloomfield, Michigan, received one of these three black, manual-equipped GT1 convertibles. Not content with its one-of-three status, the dealership promptly turned it over to Callaway Cars to be fitted with the company’s SC580 package. So, what you’re looking at here is the only Callaway GT1 model built—a one-of-a-kind. Collectors take note.