Rich wrote:
Rubbish. Cleaning dirt off isn't the same as removing old paint
finishes, or oxidization. Go to a museum, look at gold dug up or
retrieved from the ocean after a 1000 years. You think it came out of
that sparkling clean?

Yep. As a professed metallurgist you should know that gold doesn't
tarnish or corrode in salt water.

--
Ray Fischer