Howdy Gents, can anyone help me ID these girder forks?

 
I was told they were possibly pre-war BSA, ie M19 OHV De Luxe 350, M20 SV, M22 Sports 500, M23 OHV Empire Star 500. 
They’re definitely not M20. The tubes are a lot heavier than my M20 girders, though they are a lot narrower between the legs, and the overall length is about 2” shorter than M20.

Any ideas would be much appreciated, I can’t use them, so would like them to go on to someone who can, the more pre-war bikes back on the road the better.

Nick 
(Melbourne, Australia)

email (option): nick.umek AT gmail.com

G'day Nick,
Seeing that there is no brake plate anchor, the handle bar clamp and those headlight stay mounts I'd say light weight. looking at Leon's page. 1932 B32, L32. 1933 B33. 1934 X34, B34 up to 250cc.

I'd say that the brake rod lug and the simple star washer damper narrows it down to 1932 B32, L32-2 or L32-3. Ron

email (option): ronpier@talk21.com

They are B or L model 250-350
32 saw the introduction of the ears for the headlight
However your top yoke was last used in 31

They do have an anchor point for the brake it is on the timing side just above the axle.

Definitely not used on B2 Or X0
The anchor point is higher on these models
Also they don’t use a solid brake rod, they used a cable that enters from the rear of the fork.

Yep the picture I posted is a 1932 B1 (not B2) Ron

email (option): ronpier@talk21.com