Re: Cleaning & polishing "German silver" on metal-body National
The bast stuff I ever used is Simichrome. As its' name suggests, it is for chrome, but the label also lists nickel. I have used it for nickel plated parts like bass tuning machines, and my old Weymann mandolin. It works fantastic. The tuning machines on my old Kay bass were so dirty and full of grime I didn't even know until after I polished them with Simichrome that the pair on one side were nickel and the pair on the other side were brass!!! I owned the bass for 2 years before I knew that. You can find Simichrome in most motorcycle shops.
2013 J Bovier A5 Special w/ToneGard
D'Addario FW-74 flatwound strings
Red Bear "Big Picker" Heavy w/no bevel
1993 Oriente HO-20 hybrid double bass
Small body guitar converted to octave mandolin