Everyone should read VBCC #7 re restoration. I don't think it is available online unfortunately. And I imagine the state of the art has, if anything, improved since 1996. The grading services are pretty good, but it's like drug detection, the money and technology is on the other side.
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Net 54-- the discussion board where people resent discussions. 
My avatar is a sketch by my son who is an art school graduate. Some of his sketches and paintings are at
https://www.jamesspaethartwork.com/
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