Crab,
I have one here that I got from Alex Ries, That should be period correct. Flat lever, and straight tapper adjuster screw. I have not gotten to doing a refurbish on it. Normally I would tear it completely apart, and use a brass brush on a Dremel at low speeds to clean off any rust and residue and then clear coat to prevent any more damage to the chrome. And then re-assemble with light Campy grease. It will need a good cleaning or refurbishing. PM me Smiles, MH
