If you look closely at the lock barrel, the key number may even be stamped on it, in which case it can be replaced without needing to extract the barrel from the fork crown. They are much the same as vintage car ignition or filing cabinet keys.
Polo; Reply to posts from so many of you knowledgeable Raleigh enthusiasts. In no particular order.
1. Sadly no visible barrel number for front wheel lock.
2. I hope I am able to attach photos taken of rear hub and underneath crank case in my quest to find date, but photos fo not send, I’m writing the following details here in case it gives any of you a clue that it would not to me. Rear hub:-
PATENT. 527629
527632
PROV. 21069/44
SWISS. 216572
219045
On the other side of rear hub, there is a long diagonal within which it says; DYNO 3 THREE
Underneath on left and just outside triangle, there are the numbers, 46. On the right side, 11, but strangely in Roman numerals.
Since I found the frame number “233555 P” at top of chassis tube that seat post sits in, I have discovered “356334” on the underneath of the crank case.
3. Partly burnished out before chroming are also some figure/letters on top bracket that that holds the handlebar. See photo.
I stopped riding it in 1978 after an articulated lorry pulled over too soon while passing me and caught my elbow sending me into a ditch.
thank you again to all who have spent time replying to me. I had no idea, all these,near fifty years, since I was given it, (forty two of which spent in my loft) that it would create such nice and helpful responses from so many knowledgeable enthusiasts. It rides so well and what a treat to re familiarise myself with a sturmey Archer. No chain to come off and gears not sensitive to going out of
adjustment either. Polo.