When it comes to collecting racing motorcycles of the ’70s, there are few prizes more precious than championship-winning BMW superbikes.

On January 9 at Bally’s Hotel & Casino in Las Vegas, Bonhams will offer a 1972 Butler & Smith BMW F750, one of only two factory-supplied machines modified by tuner Udo Geitl of Butler & Smith—BMW importers for America at the time.

The surprisingly fast and powerful R75/5s that Geitl uprated for Team Butler & Smith literally stunned the world, and helped change the formerly stuffy image of BMW in America.  

The F750 on offer was an official entrant in the 1973 Daytona 200 with BMW rider Kurt Leibmann, alongside its twin ridden by Reg Pridmore, and is expected to fetch up to about $75,000.

Who knows—maybe you can win enough in the casino before the auction to finance a bid…