If it helps, its stored in acid free folder and mylar pages, there is no PVC at all in my collection.
But I agree, goodness knows how it was stored until I got it.
Do you havwe any suggestions to remove it with as little damage as possible - its a nice coin I want to keep nice - such a shame to let it rot because of some bozo in the past too cheap to not use PVC pages.
Loving Halfcrowns. British and Commonwealth coins 1750 - 1950 and anything Kiwi.
If it's round, shiny and silvery I will love it.