Yes, it looks like the underfloor clutch MC used on the '69 model year Alfas sold here in the States. Of course, I am only familiar with LHD cars - dunno if the same part was used on '71 RHD models.
It looks like the underfloor clutch MC available from Alfaholics - see Clutch Master cylinder – standing pedals | Classic Alfa Romeo spare parts and accessories
I don't think that accordian hose around the actuating rod is original. Not clear what function it serves other than to trap moisture.
Andrew:That long actuating rod might mean RHD, or it might be someone's homespun installation in a nonstock location, such as in a former mechanical-clutch car, needing a long rod.