Sue,



Unfortunately, the one thing I am sure of in caring for historic and

valuable coins is that you never, NEVER, ever clean them. Use no chemicals,

abrasives, or harsh language, no matter how non-invasive it might sound.

The value and importance of coins is in their condition as well as their

rarity, and even light "cleaning" can seriously damage their appearance and

value.



I would advise you leave them for a conservator to deal with, depite the

late date. Perhaps a small label explaining that to visitors.



Mark Janzen

Registrar/Collections Manager

Edwin A. Ulrich Museum of Art

Martin H. Bush Outdoor Sculpture Collection

Wichita State University

(316)978-5850





                                                                           

             "Sue E. Clock"                                                

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                                       Cleaning early coinage              

                                                                           

             04/16/2007 08:25                                              

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Our mid-sized museum is preparing an exhibit of medium exchange featuring

currency and coinage.  Some of the early colonial coins are extremely

tarnished and dark.  I am unsure of how to safely “clean” or prepare these

early coins for display, knowing that some cleaners are quite harsh and

damaging.  We do not have a conservator on staff and would not be able to

consult with one at this late date.  I would appreciate any comments or

suggestions on cleaning methods for copper, silver and gold coins.  Thank

you in advance.























Sue Clock





Collections Manager





Minnetrista





Muncie, IN  47303





765-213-3540 Ext. 136





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