Hi,
I've just picked up a c1938 tandem (BSA). It has a 3 speed Sturmey archer? Trivolex? rear hub with a Sturmey Archer handle bar mounted changer but because the hub was slipping the previous owner had a 3 speed 'Cyclo' derailleur fitted with a top tube lever changer. I can't upload the pictures I've taken at the minute so will add a couple of generic ones if I can.

My question is.. Is it worth fixing the Sturmey Archer hub or just keeping the derailleur in terms of authentic value?

TIA.

EDIT: Now I'm confused the sales brochure for the bike is attached.... Which gears is it even supposed to have????

aaaaaah confused....