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).
Cost of K.L.G. 503 Sparking Plugs.
| Identifier | ExFiles\Box 58\3\ Scan112 | |
| Date | 1st May 1929 | |
| Hs. {Lord Ernest Hives - Chair} X1918 la. {L. A. Archer} ROY {Sir Henry Royce} /GEA.12/EB1.5.29. With reference to the K.L.G.503 Sparking Plugs, supplied by the Robinhood Engineering Works, Ltd, in accordance with your memo reference Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 2/LG.23.3.29. These Plugs have been invoiced to us at £1.0.0d. each Do you consider this a reasonable figure ? are you keeping the plugs? ROY. {Sir Henry Royce} [Signature] | ||