Appears to be a struck thru grease?



Or a bad dipping job.

Maybe ugly coin time?

struck through is correct

I don't know if quality control is really down at Philadephia mint, but I picked up a couple rolls of nickels at the bank and got a bunch of cuds, cracks, strike thru, and weak strikes from them.

Here is the reverse also struck thru.



Harder to tell but it shows up in the water and land. Then add the bottom of "US" in pluribus is connected by a line.

So that's why some of my nickels look like that (have a few that look almost exactly like the top). Wasn't sure what it was.

yep.... those coins were struck through grease that wasn't too full of metal shavings and other stuff