Jeffrey Herman is an amazingly skilled repairman and metalsmith, and an actual Silversmith, in the sense of the word of being able to raise a teapot from a flat sheet of silver.
If I ever had an heirloom piece of silver that needed repair, Jeff is the man I’d call.
He has a terrific resource on his site about how to polish silver without damaging it.
Who knew you could remove light tarnish with Purell? I didn’t. Here’s the link to this terrific resource. He covers copper too!