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).
Price list for 'Graham' electrical autohorns, special models in polished aluminium.
| Identifier | ExFiles\Box 49\5\ Scan111 | |
| Date | 30th September 1926 guessed | |
| "GRAHAM" ELECTRICAL AUTOHORNS SPECIAL MODELS IN POLISHED ALUMINIUM TABLE: MODEL | CIRCUIT | PRICE COLUMN REFERENCE | LIST NUMBER | CODE WORD | PRICES (1) HORN ONLY | (2) With PUSH and FLEXIBLE CORD | (3) With PUSH, JUNCTION PIECE and ARMOURED CABLE 6¾" Trumpet. Overall length of Horn, 10¾". Approximate Weight - 1 lb. 14 ozs. 6-volt | 1, 2, 3 | EH 5, EH 6, EH 7 | SORTEAR, SORTEYO, SORTIERE | £3 18s 0d, £4 5s 0d, £4 14s 0d 12-volt | 1, 2, 3 | EH 5A, EH 6A, EH 7A | SORTILEGA, SORTIREMO, SORTIRESTI | £3 18s 0d, £4 5s 0d, £4 14s 0d 8½" Trumpet. Overall length of Horn, 12½". Approximate Weight - 1 lb. 15 ozs. 6-volt | 1, 2, 3 | EH 8, EH 9, EH 10 | SORTIRONS, SORTIVATE, SORVADO | £3 19s 0d, £4 6s 0d, £4 15s 0d 12-volt | 1, 2, 3 | EH 8A, EH 9A, EH 10A | SORVAR, SORVEDURA, SORVINHO | £3 19s 0d, £4 6s 0d, £4 15s 0d 11" Trumpet. Overall length of Horn, 14". Approximate Weight - 2 lbs. 6-volt | 1, 2, 3 | EH 11, EH 12, EH 13 | SORVIVO, SORVOLAVA, SOSACARAS | £4 4s 0d, £4 11s 0d, £5 0s 0d 12-volt | 1, 2, 3 | EH 11A, EH 12A, EH 13A | SOSANAR, SOSANARIA, SOSANARON | £4 4s 0d, £4 11s 0d, £5 0s 0d (Note: This model is supplied also with brass or nickel plated finish, 6 or 12 volt at the same prices.) 11" Trumpet. Overall length of Horn, 14". Approximate Weight - 2 lb. 2 ozs. 6-volt | 1, 2, 3 | EH 14, EH 15, EH 16 | SOSAQUES, SOSEGARAN, SOSEGUEIS | £4 2s 0d, £4 9s 0d, £4 18s 0d 12-volt | 1, 2, 3 | EH 14A, EH 15A, EH 16A | SOSEROS, SOSIAS, SOSIEGAN | £4 2s 0d, £4 9s 0d, £4 18s 0d 13" Trumpet. Overall length of Horn, 17". Approximate Weight - 2 lb. 4 ozs. 6-volt | 1, 2, 3 | EH 17, EH 18, EH 19 | SOSIGENES, SOSILUS, SOSIPATER | £4 4s 0d, £4 11s 0d, £5 0s 0d 12-volt | 1, 2, 3 | EH 17A, EH 18A, EH 19A | SOSIPOLIS, SOSLAIO, SOSLAYAR | £4 4s 0d, £4 11s 0d, £5 0s 0d 15½" Trumpet. Overall length of Horn, 19½". Approximate Weight - 2 lb. 6 ozs. 6-volt | 1, 2, 3 | EH 20, EH 21, EH 22 | SOSORES, SOSOS, SOSPECHO | £4 8s 0d, £4 15s 0d, £5 4s 0d 12-volt | 1, 2, 3 | EH 20A, EH 21A, EH 22A | SOSPEITA, SOSPESERO, SOSPESO | £4 8s 0d, £4 15s 0d, £5 4s 0d IN ADDITION to the Special Models in Polished Aluminium, as illustrated, Standard Types of Autohorns with medium and long trumpets are supplied as follows : NICKEL-PLATED or POLISHED BRASS DOMES with other parts in Black Enamel, or ALL BLACK ENAMEL FINISH The Warning Signal of Quality and Distinction S.O. | ||