LOT 228

The David Plant Collection 1928 Triumph 500cc Model P Registration no. SV 7634 Frame no. 1010626 Engine no. 255886RMT

Sold for £4,600 inc. premiumLot to be sold without reserve

Lot 228

The David Plant Collection, 1928 Triumph 500cc Model P

The Spring Stafford Sale - The International Classic MotorCycle Show|26 April 2026, 11:30 BST|Stafford, Staffordshire County Showground

The David Plant Collection
1928 Triumph 500cc Model P
Registration no. SV 7634
Frame no. 1010626
Engine no. 255886RMT

A landmark machine in the development of the motorcycle in Britain, Triumph's Model P debuted at the 1924 Motor Cycle Show. A no-frills, sidevalve-engined model, the newcomer was priced at £42 17s 6d, at which level it undercut every other 500cc machine then on sale in the UK. The first batch manufactured was not without its faults, but once these had been sorted the Model P was a runaway success. Output from Triumph's Priory Street works was soon running at an astonishing 1,000 machines per week, and the Model P's arrival undoubtedly hastened the demise of many a minor manufacturer. Production continued until the decade's end, by which time the Model P had spawned a number of derivatives – models N, Q and QA - and lost penny-pinching features such as its guide-less valves and bicycle-type front brake.

This Triumph Model P is an older restoration now showing signs of age. The history file contains a continuation logbook showing that the machine was originally registered 'VF 3064' and recorded as a motorcycle and sidecar combination. This logbook records the date of first registration as 22nd March 1928 and shows the machine taxed between 1950 and 1953. At a later stage the Triumph was re-registered 'SL 9858', which was subsequently transferred. The machine now carries the age-related registration 'SV 7634' and is offered with old/current V5/V5C documents. The engine turns over.

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

Footnotes

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.

Please see the Auction Information and Guide for Buyers at the top of the main sale page, for bidders' obligations. The Spring Stafford Sale

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This Lot will be auctioned on Sunday 26 April, with the auction starting at 11:30am BST.

Saleroom notices

This is a 1927 example.

Additional information

This auction is now finished. If you are interested in consigning in future auctions, please contact the specialist department. If you have queries about lots purchased in this auction, please contact client services.
Buyers' Obligations
ALL BIDDERS MUST AGREE THAT THEY HAVE READ AND UNDERSTOOD BONHAMS' CONDITIONS OF SALE AND AGREE TO BE BOUND BY THEM, AND AGREE TO PAY THE BUYER'S PREMIUM AND ANY OTHER CHARGES MENTIONED IN THE NOTICE TO BIDDERS. THIS AFFECTS THE BIDDERS LEGAL RIGHTS.
If you have any questions about the Conditions of Sale, please contact your nearest client services team.
From 28 June 2025, the import into the EU of non-EU property of a certain age (and in some categories above a certain value) is subject to additional requirements. Under the relevant EU Regulation, it is the Buyer's sole responsibility to assess whether any Lot meets the criteria for import into the EU. The refusal of any required Import License or Importer Statement, or any delay in obtaining such License or Statement shall not give rise to the rescission or cancelation of any Sale, nor allow any delay in making full payment for the Lot.
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For Automobilia the Buyer's Premium is 28% on the first £40,000 of the hammer price; 27% of the hammer price of amounts in excess of £40,001 up to and including £800,000; 21% of the hammer price of amounts in excess of £800,001 up to and including £4,500,000 and 14.5% of the hammer price of any amounts in excess of £4,500,001.
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25 April 2026, 09:00 - 17:00 BST
26 April 2026, 09:00 - 17:00 BST

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The David Plant Collection, 1928 Triumph 500cc Model P

The David Plant Collection1928 Triumph 500cc Model PRegistration no. SV 7634Frame no. 1010626Engine no. 255886RMT

Footnotes

Saleroom notices

Additional information

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The David Plant Collection
1928 Triumph 500cc Model P
Registration no. SV 7634
Frame no. 1010626
Engine no. 255886RMT