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So did anyone find what is the purpose of this screw for?
Dynamo lever I thought it was agreed?
Campagnolo shifter on the seat tube braze on – intended for a BB mounted dynamo.
https://restoringvintagebicycles.com/2017/12/10/a-meral-for-town-and-country/
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It'd have to be a lever boss rather then a crew boss. I also find it highly unlikely that a frame of this pedigree would have a BB mounted dynamo, any dynamo for that matter.
Perhaps a screw holding seat post in place? I know there's a seat post binder at the seat stays joint, but perhaps its insufficient?
So did anyone find what is the purpose of this screw for?