the "crack"is not complete, you can see intervals where it is not affected. (look right after the T in cents) Zinc rot might explain this, but it looks too small, and too uniform in my opinion.
I would lean towards some sort of planchet issue. It also could be a scrape in the die from polishing, but one would think this would be a known error by now.
I would lean towards some sort of planchet issue. It also could be a scrape in the die from polishing, but one would think this would be a known error by now.
























