1954 Norton 350cc Manx Model 40 Racing Motorcycle Frame no. J10M2 57851 Engine no. J10M2 57851

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Lot 629N
1954 Norton 350cc Manx Model 40 Racing Motorcycle
Frame no. J10M2 57851 Engine no. J10M2 57851

£ 18,000 - 26,000
US$ 23,000 - 34,000
To be sold without reserve
Amended
1954 Norton 350cc Manx Model 40 Racing Motorcycle
Frame no. J10M2 57851
Engine no. J10M2 57851
• Matching frame and engine numbers
• Bought at a UK auction
• Seemingly restored to a good standard

Dubbed 'Manx Grand Prix' in 1939, what would become the best-known racing motorcycle of all time had become simply 'Manx' when production resumed in 1946. Built in 350cc and 500c versions, the two Manxes were designated Model 40 and Model 30 respectively. Norton's over-the-counter Manx racers were much the same as their pre-war counterparts, with single-overhead-camshaft engine, 'square' cylinder head finning, upright gearbox and plunger-suspended 'garden gate' frames. Only the presence of the hydraulically damped Roadholder telescopic front fork readily distinguished them from the '39 machines. 1949 brought the first significant change in engine specification, the Manx gaining a double-overhead-camshaft cylinder head like that enjoyed by the works bikes for many years, but the major development was the arrival of the Featherbed frame for 1951. The works' adoption of the McCandless-designed duplex-loop swinging-arm chassis the previous year had given the Nortons a new lease of life in Grand Prix racing, and Geoff Duke duly took both the 350cc and 500cc world titles in 1951. The cycle parts remained essentially unchanged from then on apart from the adoption of a double-sided, twin-leading-shoe front brake for 1962. Manx engine development though, continued steadily, latterly under Doug Hele's direction until production ceased at the end of '62, among the most significant design changes being the adoption of 'square' bore and stroke dimensions for 1954, facilitating the use of larger valves, and a switch to coarser-pitch bevel teeth in 1957.

The vicissitudes of racing being what they are – crashes, blow-ups, rebuilds, engine swaps, etc – it is not surprising that so many old racing motorcycles no longer have their original engines, a state of affairs that makes this 'matching-numbers' Manx somewhat of a rarity.

Seemingly restored to a good standard, this Model 40 Manx was in its present condition when purchased at a UK auction. The factory records state that the machine was dispatched on 9/4/54 to H&M (possibly Hazell and Moore of New South Wales, Australia). Otherwise nothing is known of the machine's racing history (if any) and there are no documents present.

Footnotes

  • As with all Lots in the Sale, this Lot is sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.

Saleroom notices

  • Please click the link to view the walkaround video of Lot 629: click here
Contacts
1954 Norton 350cc Manx Model 40 Racing Motorcycle Frame no. J10M2 57851 Engine no. J10M2 57851
1954 Norton 350cc Manx Model 40 Racing Motorcycle Frame no. J10M2 57851 Engine no. J10M2 57851
Auction information

LIVE AND ONLINE AUCTION
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Bidding Notices

VIEWING
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Please email: [email protected] with your preferred date, time and vehicle registration number or call +44 (0) 20 8963 2817 to book an appointment.

VIEWING TIMES
Wednesday 12 August 1pm to 5pm
Thursday 13 August 9am to 5pm
Friday 14 August 9am to 5pm
Saturday 15 August 9am to 5pm (Lots 501-704 only)

SALE TIMES
Friday 14 August Spares & Memorabilia (Lot 1 - 212) 10am
Saturday 15 August Motorcycles (Lot 301 - 462) 10am
Sunday 16 August Motorcycles (Morbidelli) (Lot 501 - 704) 10am

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CONDITIONS OF SALE – GUIDE FOR BUYERS
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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 complaints or questions about the Conditions of Sale, please contact your nearest customer services team.

Buyers' Premium and Charges

For all Sales categories, buyer's premium excluding Cars, Motorbikes, Wine, Whisky and Coin & Medal sales, will be as follows:

Buyer's Premium Rates
27.5% on the first £2,500 of the hammer price;
25% of the hammer price of amounts in excess of £2,500 up to and including £300,000;
20% of the hammer price of amounts in excess of £300,000 up to and including £3,000,000;
and 13.9% of the hammer price of any amounts in excess of £3,000,000.

VAT at the current rate of 20% will be added to the Buyer's Premium and charges excluding Artists Resale Right.

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Lot symbols
N NOVA declaration

If purchased by a UK resident, this machine is subject to a NOVA declaration, undertaken by Bonhams upon a successful sale, to facilitate the registration of the machine here in the UK.