Nice speedo! I checked my files, and have a pin drive with a 3-'42 date listed, an Anti-Clock model, believed to be for a Royal Enfield, after that the more common later type was used.
So what bikes were listed as an RAF contract in the beginning of 1942?? It could just be that the speedo's were blue, and the rest of the bike green or brown ofcourse.
I'm puzzled by the speedo. The application of paint to a dull-chromed "ridged" bezel doesn't conform with pre-war practice. The screws from the type plate have clearly been removed at least once. What might the small "SR/42" indicate ? "Service Repair" perhaps ?
Presumably if an instrument went back to Smiths for overhaul, for guarantee purposes, it would be fitted with a data plate bearing the current date ?
We'll never know, but could this instrument have been a service-repair for a pre-war RAF Norton sidecar outfit or similar ? It's quite likely that those in use for tasks such as ferrying messages and staff around the Air Ministry might not have been re-painted.
RAF blue Lucas or Smiths instruments are bizarre, but I'll ask another question: 99% of the "projects" that have been bought by forum members still have some original paint somewhere (under a coat of post war civilian paint, or inside the brake drums, or inside the primary chain cover, or inside the headlight, ...). I'm keeping a Register for the WD Royal Enfields, and I have to say that I have never come across original RAF blue paint on RAF contract bikes (and there are a few...). Has anybody ever seen original RAF blue on an unrestored bike...? (BSA, Norton, Ariel, ...)
Lex the only WD bikes with an Anti Clock speedo were the Royal Enfield WD/G and WD/L. Both mine came without a working speedo. I acquired a NOS 1942 dated AC speedo with the correct part number on the brass tag which is on my WD/G. For the WD/L, David Woods reworked a standard pin drive speedo for me to reverse the action. Ron