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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).
Translated testimonial letter regarding the performance of spark plugs during a Grand Prix event.

Identifier  ExFiles\Box 33\3\  Scan227
Date  24th July 1922
  
TRANSLATION of TESTIMONIAL.

AEROPLANES G VOISIN,
36 Boulevard Gambetta
ISSY-les-MOULINEAUX.

24th July, 1922.

BOUGIES J.{Mr Johnson W.M.} A.{Mr Adams} M.{Mr Moon / Mr Moore}
129 Bd{Mr Berend} St Denis,
COURBEVOIE (Seine)

Dear Sirs,

In the name of my friends Duray, Garderman, Puccioni, and also in my own, I beg to testify all the satisfaction we have obtained from your standard plugs, these have been submitted to very severe tests, and as a sequel we adopted your plugs for the Grand Prix de Tourisme de l'Automobile Club de France.

We want to precise that not one of us during the tests and the contest proper, have replaced any of the plugs and that we have experienced not a single misfiring, no trouble whatever.

We beg etc.....

Signed ..... ROUGIER
  
  


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