Andy as Rik explained the 'W' prefix was used by BSA for the 1940 model and subsequently used until 1945. There were well over 4000 WC10 frames used where only 1354 were used for military C10's - 35 Admiralty C12's and 530 specially prepared C11's for the high commission India. Some were ordered by the GPO and a few went to the dept of Post Dublin. The rest (well over 2000) all went to the civilian market in the UK and several other countries around the World.
I'm afraid the one you're looking at is a fake and even still has its civy tank badges fitted. It deserves to be restored in it's correct Black and Silver livery. Ron
Thank you all for your most interesting and informative replies. As I communicated to Ron I had a feeling about it as I do not know the marque could not really call it. I will continue looking for something new/old if you get my gist!
Hi Ron
I have registration numbers with frames associated with 31 of these bikes but will need to double check
The frames vary from 4 digit to 3 digit numbers & going to when they originally were issued with road tax/ fund discs - vary in years from 1940, 1941 & 1944
Next time I’m in Dublin with time I have a number of ledgers I have highlighted I need to rexamine
I admit my logging of these bikes which were not M20 were fairl brief look overs before I had to get the last flight back to Heathrow
I must admit John, my viewing on this particular subject was also brief. I only saw the final block of about 12 bikes in 1941. But there might be others individually interspersed throughout the the whole 4000 bikes. I'll look closer and note down all the details if you want. Ron
John I've taken a longer closer look.
I've found one bike supplied to the Dept of Defense, Dublin and 15 to Dept of Post and Telegraph. There are about 12-15 more to Erne Motors in Dublin. Any bikes in Dublin with a 3 figure frame number must be ex WO London as they used consecutive numbers from 101 to 1451.
I'll send you my list with frame/eng numbers and dates of despatch. Ron