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Lot 374: 1939 Royal Enfield 346cc Model CM

Sale of Collectors' Motorcycles, Bonhams & Butterfields (12 November 2005)

Royal Enfield of Redditch manufactured a range of bewildering and fast-changing variety in the 1930s. ‘Slopers’ with inclined engines were a feature of the decade’s early years, and then in 1936 a revised range with vertical engines began to be phased in, establishing the pattern for Enfield singles for the next 25 years. The first of these new machines were the overhead-valve models G (350cc) and J (500cc), both of which came with coil ignition, dry sump lubrication with oil reservoir contained with the crankcase, and four-speed foot-change gearboxes. Later in the year the line-up expanded with the arrival of the basically similar 250cc overhead-valve S2 and 350cc sidevalve Model C. Originally applied to a 350 sloper in 1930, the ‘CO’ designation was revived in 1938 for a lighter, coil ignition version of the overhead-valve de luxe Model G, which was joined by the otherwise similar but magdyno-equipped CM the following year. This Royal Enfield Model CM is offered for restoration.

Lot Details
Auction Sale of Collectors' Motorcycles
Bonhams & Butterfields, Petersen Museum, Los Angeles, CA
TypeMotorcycle
Lot Number374
Estimate$1000-$2000
Outcome SOLD
Hammer Price$1000
Hammer Price (inc premium)$1150
Year1939
Condition rating
Registration number
Mileage-
Chassis number
Engine number24571
Engine capacity (cc)
Engine - cylinders
Number of doors