Might be a glue-like substance or dried liquid on the coin--a thin layer or stain. Might come off if the coin were soaked in 100% acetone.
Can't see well what might be going on in the QUA area of QUARTER.
Can't see well what might be going on in the QUA area of QUARTER.
Edited by ijn1944
12/29/2021 07:49 am
12/29/2021 07:49 am