There is nothing wrong with spraying clear acrylic laquer on coins. It WILL preserve them. I have treated a '64 Half thus, way back in 1964. It is as good as the day I sprayed it.
Acetone will remove the protection.
One important note of caution:
The clear coat is very delicate and subject to mechanical damage. If it has flaked off where the coating has been damaged, there will be patches of the coin that will be subject to toning, when the rest of the coin is still protected. Result? The coin will still need protection in a saflip, cardboard / mylar 2x2, or screw capsule.
That is the reason I think, why spray protective coating is not popular.
Acetone will remove the protection.
One important note of caution:
The clear coat is very delicate and subject to mechanical damage. If it has flaked off where the coating has been damaged, there will be patches of the coin that will be subject to toning, when the rest of the coin is still protected. Result? The coin will still need protection in a saflip, cardboard / mylar 2x2, or screw capsule.
That is the reason I think, why spray protective coating is not popular.


















