From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Advertisement for the Sparton SOS motor horn, marketed as a Christmas gift.
| Identifier | ExFiles\Box 49\5\ Scan124 | |
| Date | 5th March 1929 guessed | |
| With thanks to W. Lester & Narodny The NEW NOTE in MOTOR HORNS! —and a new note in Christmas Gifts WHAT better Christmas present to your motoring friend than this latest and best of warning signals ? The Sparton S O S has a remarkable tone projection of lightning speed—yet smooth and with a ringing harmony of perfectly blended sound. Pay your motoring friend the compliment of giving him, or her, the best. YOUR DEALER WILL GLADLY DEMONSTRATE. SPARTON S O S £5 : 12 : 6 SPARTON S O S Junior £3 : 17 : 6 SPARTON SOS ALFRED GRAHAM & COMPANY (E. {Mr Elliott - Chief Engineer} A. {Mr Adams} GRAHAM) St. {Capt. P. R. Strong} Andrew's Works, Crofton Park, London, S.E. 4 London Showrooms : 25-26, Savile Row, W.1. and 79-82 High Street, Clapham, S.W.4. Manchester : 10, Whitworth Street West. Scottish Depot : 101, St. {Capt. P. R. Strong} Vincent Street, Glasgow. | ||