pvc residue

  1. Sardar
    Thread

    A mistake by NGC because of grading problematic coin ?

    The picture shows a coin which is graded MS 62 by NGC. However you can see green spots ( of PVC residue or ?) . My question is how this coin is...
    Thread by: Sardar, Oct 27, 2019, 6 replies, in forum: World Coins
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