A lovely handmade Flute Makers Guild solid silver flute. It was unplated hence the particularly heavy tarnish as can be seen.
This isn’t uncommon in such instruments and oft times it can be better for the owner to not try and over clean their flutes as the pads can get damaged or springs unhitched. Nothing terribly drastic but annoying if it can be avoided.
I should point out here too that I use no mechanical devices to clean instruments. It’s all done by hand with cleaning products and cloths. Yes, it can take quite a while but there is far less danger of causing any damage to the instrument.