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<p>[QUOTE=&quot;Kevin Mader, post: 5319757, member: 106826&quot;]A couple of thoughts. </p><p><br /></p><p><br /></p><p><br /></p><p>Regarding acetone, I often use it to stabilize a coin that may have been handled with oily fingers.&nbsp; High grade circulation finds.&nbsp; No rubbing...just dipping and drying.&nbsp; A soak will sometimes also loosen up some debris and carry it away.&nbsp; This could be advantageous or ruinous.&nbsp; Depends on what it looks like once the process is over.&nbsp; Generally, I wont soak an older coin for fear of altering appearance, especially on a more notable coin.&nbsp; I&#039;ll accept the general buildup that comes with the coin.</p><p><br /></p><p>Regarding conservation, perhaps using an ultrasonic cleaner, there may be a practical and pragmatic use for it.&nbsp; I would visit the folks that deal with Ancient coin conservation for a better opinion.&nbsp; But for some coins, especially massed coins that have to be separated for one another, the ultrasonic bath might be what is needed.&nbsp; Conservation has to be done on a number of those really old coins, but also on some of the &#039;newer&#039; coins.&nbsp; Things pulled from a wishing well perhaps.&nbsp; I recall a 1909 VDB I found couldn&#039;t be ID&#039;ed as it was.&nbsp; I soaked in distilled water to no avail.&nbsp; Soaked it in acetone and that didn&#039;t work either.&nbsp; I finally soaked the coin in Verdicare and the soiling started to lift and separate.&nbsp; Unfortunately, it left an uneven appearance, but at least the date was readily identifiable at that point.&nbsp; Oddly enough, the reverse was fine...and VDB readily apparent.&nbsp; I almost made a colossal mistake by missing the initials.&nbsp; Had I noticed, I would have opted for a professional conservation.&nbsp; If there had been an S, I could have depreciated that coin significantly. </p><p><br /></p><p>Conserve rather than clean.&nbsp; But many will argue, that conserving IS cleaning.&nbsp; So find where you sit on the issue before you do either.[/QUOTE]</p><p><br /></p>

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