Looks like some kind of impurity was sitting on the surface of your half dollar for 40 years.....I see a lot of mint and proof sets with the same issue.
Dave
Always looking for original, better date VF20-VF35 Barber quarters and halves, and a quality beer.
I agree that this spot was probably caused by a small hole in the plastic. I have a bunch of old proof sets with spots like this, all dark purple/black.
I'm the Proud recipient of a genuine "you suck" award dated 1/24/05. I was accepted into the "Circle of Trust" on 3/9/09.
Comments
Dave
I think it is natural.
I can think of a dozen reasons not to have high capacity magazines, but it's the reasons I haven't thought about that I need them.