Testimonial letter from driver Rougier regarding the performance of JAM spark plugs.
| Identifier | ExFiles\Box 33\3\ Scan225 | |
| Date | 6th June 1922 | |
| AEROPLANES G.VOISIN, 36 Boulevard Gambetta, ISSY-les-MOULINEAUX, AERONAUTIQUE AUTOMOBILE - MECANIQUE 6th June, 1922. Etablissements Industriels J.A.M. 129 Boulevard St Denis, BOURBEVOIE. Dear Sir, In the following races: 1 Course de cote de la {L. A. Archer} Turbie a Nice the 12th of March 2 " du Limonest on the 7th of May 3 " des Alpilles the 14th of May 4 " At Pic Montaigu on the 25th of May, where I won the 1st place, I had as usual my engine equiped with your Standard JAM plugs No 52. They have given me the best satisfaction in every respect. I beg to etc.... signed.....ROUGIER. | ||
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).