>>8779280I try to avoid any kind of cleaning and especially any kind of lacquer or polycoat. A bit of liquid wax seems to be an accepted method of limiting corrosion after handling. Of course this is only a big concern when discussing older and more valuable collectible pieces.
I didn't get around to labeling this photo, but there's a number of old oddballs in there including two 6.5mm Bergmanns - standard rimless and the early grooveless version.