Re: Article on plated and counterfeit copper dimes and quarters now online
- Yea, I have a big enough Gut that I hope I don't
make too many big errors!
--- In firstname.lastname@example.org, "Mike Diamond" <mdia1@...> wrote:
> Thanks again to John Lorenzo for his help in this study.
> The 1972-D dime managed to fool almost everyone. I was never entirely convinced of its authenticity and Fred Weinberg's gut told him there was something not quite right about it.
> One thing I've learned is that plated coins are not necessarily overweight. They can, in fact, be slightly underweight. I suspect that chemical cleaning prior to plating manages to strip a few hundredths of a gram from the coin's surface without appreciably affecting the clarity of the design.