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In message <Pine.3.89.9712221005.F29823-0100000@tr*.co*>, "William M. Smithers" <will@tr*.co*> writes > If it is gold it should not tarnish at all! However I use vinegar on all our bits of brass - again slightly acidic. Good luck hope you find lots more. >If they are really solid gold coins, just about any strong >acid should do the trick - watered-down battery >acid should work well. > >-Will > >On Mon, 22 Dec 1997, Rod Budd wrote: > >> Hi >> >> We recently came across 2 gold soveriegns while diving a wreck here >> in NZ. >> They are covered in what looks like iron oxide and some other black >> stuff. Can anyone tell me the best way to remove the 'gunk' without >> damaging the coins? >> >> Thanks and Merry Christmas >> >> ...R >> >> Rod Budd >> NIWA, National Institute of Water & Atmospheric Research >> P.O. Box 11-115, Hillcrest, Hamilton, >> New Zealand >> +64 7 856-1718 (tel) 856-0151 (fax) >> +64 25 734-066 (mob) >> r.budd@ni*.cr*.nz* http://www.niwa.cri.nz >> -- >> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >> Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. >> >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- oceanquest diving centre -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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