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<p>[QUOTE=&quot;desertgem, post: 520607, member: 15199&quot;]Boss, sorry I was messing with a property management problem all afternoon and haven&#039;t been following the thread. I have never used oil on any coins. nor MS70, Blue Ribbon or anything like that as a preservative. I agree with Thad that oil has its own problems and as long as the coins are kept from circulating environmental air and moisture, no change in the surface should occur. A closed container such as an air-tite, or the hard plastic holders contain more air when closed than a Koin-tain shell, so as barometric pressure varies, the air can move in and out more readily. The Koin-tain has much less exchange with new environmental air. If they weren&#039;t so @#*% hard for my fingers to handle, open , close...I would use them more often. I think that tightness of seal is why White found them highly, but not ENTIRELY effective. </p><p><br /></p><p>&nbsp;&nbsp; As you recall, I did a simple experiment with Ziplock vacuum bags and I really like those bags. I do find that a piece of tape over the valve increases their vacuum holding ability. Unfortunately they disappear rapidly into the kitchen. Walmart has a good price on them and the pumps. I still prefer to use a heat sealer and seal the mylar 2x2 flip after squeezing the air out as the coins are easier to organize for me</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; I use to build and maintain mechanical clocks as a hobby, and finding a clock oil that was light enough not to slow the gears, stable enough not to gunk up, and neutral enough not to corrode the brass parts took me years. I just have one small vial of it left. If I used an oil , it would have to have those properties, and my old supplier does have it anymore <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" /></p><p><br /></p><p>&nbsp;&nbsp; I do like Spock,:goofer:&nbsp; but I can&#039;t agree with his theory that verdigris is almost an alive infection that can grow and spread on its own<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie9" alt=":eek:" unselectable="on" unselectable="on" />. It will only develop if there is moisture and corrosive agents like acids, sulfides,etc. and when this is removed, the verdigris will stop increasing. The coin I did in Verdigone experiment, when I finally rinse it with acetone or xylene and put it into a protective environment, I do not expect any increase in damage. The remaining corrosion can not increase without moisture and environmental factors in the air. It Won&#039;t disappear, but it won&#039;t grow either! That&#039;s my story and I am sticking with it!:hammer:</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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