I think those with a yellow line at 30 are usually the Jaeger spigot drive type?? Which is not correct for your bike. At some point the pointed bezel was changed to the round type also. Ron

email (option): ronpier@talk21.com

Hi Ron, the fitting is this one.

Its possible someone fitted this dial to a different speedo..

email (option): brandon.stovold74@gmail.com

I had the same question on FB recently, this a very rare in-between model, with a plexiglass glass.

It's 1941ish, not much info about them at all. I have one myself.

Cheers,

Lex

email (option): welbike@welbi**.net

Hi Lex, that’s right it does have plexi-glass. I thought someone fitted this as aftermarket.

Regards
Brandon

It's a rare clock. Worth putting on the shelf and admiring. It would be a shame to do a service-exchange with it.