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Lot 361: 1935 S.O.S. 250cc

Collectors' Motorcycles, Bonhams (16 October 2005)

Founded in Worcester by Len Vale-Onslow, S.O.S. (Super Onslow Special) is best remembered for its stylish two-strokes of the 1930s. JAP-powered four-strokes were offered at the beginning of the decade, but these were soon dropped and production relocated to Birmingham in 1932. The following year Onslow introduced the first of the models that would forge the marque’s reputation, a Villiers-based two-stroke fitted with S.O.S.’s own water-cooled twin-port cylinder barrel and detachable ’head. S.O.S.’s range of up-market ‘strokers’ was steadily expanded and continued in production under new owner Tommy Meeten until 1939. Offered for restoration, this incomplete example comes with old-style continuation logbook and Department of Transport letter linking the registration mark ‘WN 8191’ to the machine.

Lot Details
Auction Collectors' Motorcycles
Bonhams, Classic & Motorcycle Mechanics Show, Stafford
Lot Number361
Outcome SOLD
Hammer Price£1600
Hammer Price (inc premium)£1840
Condition rating
Registration number
Chassis number
Engine numberRYR451
Engine capacity (cc)
Engine - cylinders
Number of doors