Rolls Conservation - Page 2 - Coin Community Forum

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Author	Replies: 23 / Views: 3,813	Page: of 2

wildflowerAB Pillar of the Community Canada 2845 Posts	Posted 04/27/2015 11:28 pm Yes, maybe adding brown cents to a collection is the simplest route. I bought a 1940's red cent on ebay. The photo wasn't great but the price was reasonable. When I received it, it looked too suspiciously worn. So I viewed it under magnification and I could see in the centres of some of the letters and numbers was disgusting green goo, probably mouldy ketchup. Ugg. Report this Post to the Staff
DEVLEC Pillar of the Community Canada 3234 Posts	Posted 04/28/2015 08:32 am Quote: the centres of some of the letters and numbers was disgusting green goo, probably mouldy ketchup. Ugg. More probably verdigris. There are methods that have been discussed here explaining how to carefully remove or "try to" remove the green. If untreated, the green will continue to attack the copper and permanently damage that cent. Some people soak them in a soft soapy warm solution and will use a sharpened thorn from a hawthorn twig to "carefully " pick away at the green. Very often this will work very well. The more brilliant the copper coin is,..the more risky this procedure is..but usually very good results on the brown cents.. I have used the picks from a rosebush myself to remove grunge and green from some of the brown cents. Practice on an unimportant shiny cent first if you want to get an idea of what your doing.. If you see remaining marks,..don't go that route.. Report this Post to the Staff
wildflowerAB Pillar of the Community Canada 2845 Posts	Posted 04/28/2015 09:07 am Thanks for the helpful information Devlec. I do have one or Two Cents with obvious verdigris that I may try to save. The appearance though of this one is quite different though - to me it literally looks like mould growing inside the letters or numbers, exactly the same colour and texture as that on a long forgotten item in the fridge. Maybe I'll post a pic of it one day soon. Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 04/28/2015 09:46 am Depends what you are trying to preserve: the coins or the paper wrappers. In my case, it is definitely the wrappers! I have 6 rolls in original paper Royal Australian MINT wrappers from 1984. The end coins are still full mint red. They stopped issuing bronze coins from 1991, and all coins issued into circulation after that date were bagged by the Mint. The coins are definitely not coming out of those wrappers! They have been stored in clip lock polyethylene bags since the day I got them over the counter from the Head Office of the Reserve Bank. Commercial bank wrappers are still available, but they contain REcirculated coins. Report this Post to the Staff
Scissel Pillar of the Community Canada 693 Posts	Posted 04/28/2015 3:05 pm Quote: ...stored in clip lock polyethylene bags... Are polyethylene bags archival/safe for storing long-term? I'm wondering if the bag would off-gas plasticizer into the paper and onto coins stored inside. For storing paper coin rolls long-term, I like to put the whole paper roll into a larger size tube, e.g., a 5c roll fits snugly into a 25c tube, or a 1c roll in a 5c tube. Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 04/28/2015 6:33 pm Perfectly OK to store paper wrapper coin rolls in clear hard screw top plastic tubes. The tubes are made of hard clear acrylic plastic. Any plastic that is safe for the storage of food is also safe for the stotage of coins. Translucent polyethylene in plastic bags is not PVC. They do not have a plasticizer. Used polyethylene plastic bags need to be recycled because they do not break down in the environment. They are chemically and solvently far too stable, and thus remain persistent in the environment; that is the reason why they need to be recovered and remanufactured. Clear PVC coin flips have a plasticizer that gasses out over time, and that can affect coins. Edited by sel_69l 04/28/2015 6:40 pm Report this Post to the Staff
DEVLEC Pillar of the Community Canada 3234 Posts	Posted 04/28/2015 9:20 pm Quote: Clear PVC coin flips have a plasticizer that gasses out over time, and that can affect coins. So where do the "inner plastic" slips in the ICCS flips fit in here..? Is there a long term problem with them..? Report this Post to the Staff
EastVanRob Pillar of the Community Canada 617 Posts	Posted 04/28/2015 11:46 pm ^ I've been told that the inner liners are polyethylene terephthalate, which are supposed to be inert. The outer holders are PVC. Report this Post to the Staff
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