I recently bought a late 19th century factory made violin by Hopf that is in need of some TLC as a project suitable for a noob. The pegs, nut and tailpiece will need replacing, which shouldn’t be too tricky. However the varnish, particularly on the belly is badly worn in places. So what’s the best way to tackle this? Also the fingerboard has light streaks. What’s the best means of staining it uniformly black?