Is this a veteran Darracq chassis?

Good morning,

a few days ago I have acquired an old (veteran?) chassis, complete with the exception of engine and radiator. I guess it is a Darracq chassis but cannot find out which type: There is a brake mechanism for the contracting band brakes with a very high sitting locking mechanism - must be on the rh side of the bench. Then there is a substantial rear axle with torque tube, chassis re-enforcement underneath and quite some space between the front and rear engine mounts (425 mm from center to center).

I am curious about finding out which type (or brand if not Darracq) and what engine and radiator it is meant to have!

 

Thanks for your help!

 

Thomas