Verdigris treatment experiment

[Mister T]

I also soak Verdi. Coins in Olive Oil,i was told to do that by a dealer when i was at school in the 1960's so its been around as a remedy for a while.It can change the Patina depending on how acidic the oil is but it stops Verdi growing.
Normally a Month is long enough then a clean in water/mild soap and left to dry for a week or so.I currently have a badly pitted 1919 Double Dot soaking in oil,into the 3rd Month,i change the oil when its gets that green tinge.

Yeah, I recently got to the stage of having green olive oil and I changed it. I can't remember where the verdigris even was on some of the coins I put in so I guess that's a success.

The Armorall leaves the coin with an almost wet looking sheen (so does VerdiCare) but no strange surface appearance.

That's good to know. Might give it a go sometime.

[Fulvio]

In case you hadn't seen it, here's an interesting article by Verdi-Care's inventor:
http://www.ebay.com/gds/How-to-Remove-Verdigris-From-Coins-/10000000017991989/g.html

I've had two batches of coins soaking for months, one in WD-40 (well, RP-7... close enuf), the other in Acetone. After a wash in warm soapy water, neither batch was "fixed", though the verdigris may have been very slightly reduced.

One thing I'm wondering, since Verdigris is a chemical reaction, what if we were to store problem coins in Acetone? It won't damage the coins, and should prevent the reaction continuing, by excluding both air and water, no? Biggest hassle I can think of is a suitable container that won't let the Acetone evaporate away, or react with it.

[Robster]

Good thoughts, I have had a couple of pennies in some acetone for about 6 weeks, (in a screw capped glass jar and the acetone level has remained constant).