Cantilever Sora Question
a few months ago I picked up a bike - I don't know what it is. It looks like mid-70s. It's got a beautiful lugged frame, Dia Compe cantilever brakes with Weinmann levers, TA Specialites crankset, Shimano 600 gears (12 spd), Shimano hubs with Weinmann rims and SR everything else, a Brooks Professional saddle and full crome forks.
It was filthy when I bought it but it cleaned up well and works beautifully. However there isn't an identifying mark on it apart from RA stamped on the top of the rear cantilever braze-on. Nothing on the bottom bracket. It looks like a Raleigh Pro frame that someone has set up for touring. It's sprayed black.
Anyway I was wondering if anyone would know if it's possible to get Sora type combined levers and shifters that would work with cantilever brakes?
I'd be most grateful for any advice.