Sosicoin, I went offline for 29 days, since I burnt myself out and had other things going on in my life, so that didn't help. Luckily, I am back now. Just have to be careful not to stress myself out. Sometimes you just need a break.
On the planchet before it was copper plated and even before it went through the upturning mill.
Maybe excess metal that may have come off when getting punched out of the sheet of zinc? And it is deep enough the upturning mill didn't obliterate it along the rim when the proto rim was formed before plating.