As a lapsed copper coin collector, the word 'polishing' caused a shudder to shoot up my spine - the collectible/antiquity value of the copper plates might be severely reduced if they are actually polished now...
And it looks as if antique dealers might agree:
http://www.sirrichardsantiques.com/other.html
Edward Sullivan
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
From: Angela R Cope <[log in to unmask]>
Date:11/14/2014 12:52 (GMT-08:00)
To: [log in to unmask]
Subject: cleaning/polishing/'enhancing' copper map plates
Due to extreme stubbornness on my part, I was lucky enough to *finally* get a set of copper map plates from the USGS surplus offering that started over the summer. Our beautiful trio of plates were delivered today....and now we need
to have them cleaned up & enhanced so that they can be framed for public display.
Does anyone have any tips about how to find a reputable person to do this sort of thing? Recommendations? Warnings?
Susan Brazer