1929 BSA Sloper
Lot 21
1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638
Sold for £6,900 (US$ 10,719) inc. premium

Lot Details
1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638 1930 BSA 493cc Model S30-12 Sloper & Sidecar Engine no. XW638
1930 BSA 493cc Model S30-12 Sloper & Sidecar
Registration no. SSJ 581
Engine no. XW638
The Birmingham Small Arms Company fist experimented with powered two-wheelers in the latter years of the 19th Century and then again in 1905. These first motorcycles made by BSA used proprietary engines such as the Belgian Minerva, and it was not until 1910 that the firm introduced a BSA designed and built machine. The first series-production model to feature the marque's distinctive green and cream tank colours was a 499cc (3½hp) side-valve single. Well engineered and equally well made, this first BSA proved an enormous success and effectively established the company's reputation as a maker of high quality motorcycles. Introduced for the 1927 season, the influential 'Sloper' started a trend which saw many of BSA's competitors adopt motors with inclined cylinders. The Sloper featured a trend-setting saddle tank that afforded a low seating position and for 1930 gained chromium-plated brightwork and a new frame with forged steel spine. Models with the 493cc overhead-valve engine came with twin-port cylinder heads. For 1930 the Birmingham firm offered no fewer than 18 models, six of which had inclined engines. The Sloper range remained essentially vintage in character until its demise in 1935, by which time the line-up had shrunk to just two models: one overhead-valve, the other sidevalve, both of 595cc. An earlier restoration, this BSA Sloper was purchased in Vinaboz, Spain in 2006 and has been used sparingly since then. Offered with sidecar (not illustrated), the machine had previously been sold by Brian Verrall to one Francisco Querault in Ibanez.

Saleroom notices

  • The frame number for this lot should read SSJ581. The engine number for this lot should read XW636. This lot is NOT offered with a sidecar as previously miscatalogued.
Auction information

This sale is now finished. If you are interested in consigning in future sales, please contact the specialist department. If you have queries about lots purchased in this sale, please contact customer 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 complaints or questions about the Conditions of Sale, please contact your nearest customer services team.

Buyers' Premium and Charges

For all Sales categories excluding Wine, Coins & Medals and Motor Cars and Motorcycles:

Buyer's Premium Rates
25% on the first £50,000 of the Hammer Price
20% from £50,001 to £1,000,000 the Hammer Price
12% from £1,000,001 of the Hammer Price

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

Payment Notices

Payment in advance: by cash, check with banker's card, credit card, bank draft or traveler's cheque.

Payment at collection: by credit or debit card.

Credit card charges: a surcharge of 2% is applicable when using Mastercard, Visa and overseas debit cards.

Shipping Notices

For information and estimates on domestic and international shipping as well as export licenses please contact Bonhams Shipping Department.

Similar Items