A 1914 Flying Merkel 980CC V-Twin has beaten an estimate of £70,000 ($112,684) by 49.3% to make £104,540 ($168,285).
The lot headlined Bonhams' Autumn Stafford Sale in Staffordshire, UK on October 19.
Joseph Merkel established the company in rural Wisconsin in 1901. It went on to become one of the most respected manufacturers of its era, developing a wealth of innovations including rear suspension and telescopic forks.
The present lot was discovered in a barn in Ohio in 1956 and sold to a local enthusiast. Despite its age it was in exceptional condition, requiring minimal cosmetic renovations.
A fully restored 1954 MV Agusta 123.5cc Bialbero Racing Motorcycle made £32,000 ($51,512).
The marque is among the most respected manufacturers of all time, producing a series of racing bikes that dominated competitions from the 1940s through to the 1980s.
MV Augusta bikes racked up an impressive 3,000 wins, including 270 Grand Prix and 37 World Championship victories.
Following the success of the more powerful four-strokes, the present model was introduced. It proved hugely effective on the track during the 1950s, winning a number of championships at 125cc level.
This example was acquired from the manufacturer in derelict condition and has since been extensively restored.
Please sign up to our free newsletter to receive exciting news about classic car auctions.