In it’s day it was the fasted motorcycle.

The Widowmaker 7¬†was named the fastest motorcycle on Earth by Guinness Book of World Records in 1973 and it’s going on the auction block at Vegas Motorcycle Auction. Bonhams estimates its value around $65,000 to $85,000.

Built by motorcycle builder and racer E.J. Potter and powered by a 350 cubic-inch Chevy V8 making 500 horsepower with a World Records, recording an 8.68-second 1/4 mile run at 172 mph.