Hello group i have a gearbox from bsa wm20 I am looking for some info can any one help me, to identify & if there are any missing parts?

email (option): LAGONAS21@WINDOWSLIVE.COM

Hi Argiris,
The M20 gearbox didn't change until the introduction of the plunger frame in 1950 and even then the internals were the same except for the speedo drive for the later box so if your gearbox looks like every other WM20 then I think that it's safe to say it will be a WD gearbox.
As for what's missing we will need some photos.

Thanks for the answer, I am new to bsa and still learning, first how can I send photos here? For my gearbox I don't know what is missing and I have some questions, for this gearbox, thanks

email (option): LAGONAS21@WINDOWSLIVE.COM

I always use this: www.imgbb.com, very easy to use and it's free.

Henk

email (option): ahum@quicknet.nl

email (option): LAGONAS21@WINDOWSLIVE.COM

Can you see. Photos now or I make a mistake?

email (option): LAGONAS21@WINDOWSLIVE.COM