Description
This motorcycle is Lot 208 to be auctioned by Bonhams at The Spring Stafford Sale (The International Classic MotorCycle Show) on April 25th & 26th, please see the Bonhams Motorcycles Website for full details.
Auction Timings:
Lots 1 - 94 are to be sold from 14:30 on Saturday 25th April 2026.
Lots 201 - 353 are to be sold from 11:30am on Sunday 26th April 2026.
Public Viewing:
Available 25th & 26th April 2026 from 09:00 until 17:00, at The Staffordshire County Showground (The International Classic MotorCycle Show).
The David Plant Collection
** 1928 Sunbeam 493cc Model 9**
Registration no. not registered
Frame no. D3305
Engine no. 7 (see text)
Sunbeam had begun experimenting with overhead valves on their factory racers in the early 1920s and these duly appeared on production models in 1924. The new '500' sports roadster was known as the Model 9 (the '350'as the Model 8) while its race bike counterpart, which could top 90mph, was accordingly designated the Model 90. Sunbeam missed the industry's virtually wholesale switch from flat-tank to saddle-tank frames for the 1928 season, and a saddle-tank version of the Model 9 did not appear until September of that year. Changes to the Model 9's engine were confined mainly to its top-end.
There are no documents with this Lot. It should be noted that only the final digit (7) of the engine number remains visible. Following a period of inactivity, this motorcycle will require recommissioning and/ or restoration to a greater or lesser extent before returning to the road and thus is sold strictly as viewed. Prospective purchasers should satisfy themselves with regard to this motorcycle's completeness, history, authenticity, originality and mechanical condition prior to bidding.
Key not required
All lots are sold ‘as is/ where is’ and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding. Visit the Bonhams Motorcycles website for all pertinent auction information.
