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Lot 299: 1933 Brough Superior 1150 ATO 573

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

This 11-50’s Brough Superior Owners Club record card relates its complex early history. On 23rd April 1933 an 11-50 (one of the first sold) was supplied new to one J Forbes, believed in Scotland. The machine had frame ‘8/1246’, engine ‘LTZ/Z 31212/SD’ and was registered ‘TV 8365’. A Cruiser sidecar was attached. For reasons unknown it returned to the Brough works the following year. Frame ‘8/1246’ received a new engine ‘LTZ/D 38013/S’ during the summer of 1934, retained the registration ‘TV 8365’ and was either returned to Mr Forbes or resold. It appears not to have survived.

The original engine ‘LTZ/Z 31212/SD’ was installed in a new frame ‘8/1429’ and a new gearbox ‘B455A.11118’ used. This ‘new’ machine was registered ‘ATO 573’ on August 8th 1934 and ‘resold’ to a Mr Graham the following day. The works record card was altered to included the new registration, fitting of a new saddle, conversion from hand to foot gearchange, alteration of sprockets from sidecar to solo gearing, changing to the later primary chain size, addition of prop-stand and leg shields. However, the changed frame and gearbox numbers were not recorded.

An old logbook shows that ‘ATO 573’, as it now was, was purchased on March 29th 1935 by Alfred Herbert Priddey, of West Ashford, Middlesex, who kept the machine for over 30 years before selling it in 1969. There was one further owner in the UK, and by 1976 the machine was owned by Bob Schanz. Bob had a new fuel tank made by Gordon Smith in England in 1980, using the original as a pattern and transferring the numbered boss from the old tank to the new. This machine is expected to possess a title document by time of sale.

Lot Details
Auction Sale of Collectors' Motorcycles
Bonhams & Butterfields, Petersen Museum, Los Angeles, CA
Lot Number299
Outcome SOLD
Hammer Price$32000
Hammer Price (inc premium)$36800
Condition rating
Registration number
Chassis number
Engine number31212
Engine capacity (cc)
Engine - cylinders
Number of doors