O.k., let's try this. I've got a 1984 penny with a smeared S of on the back with a partially filled B in E PLURIBUS UNUM. Am I correct is believing these are from grease on the die when being struck?
sorry furry, but from what i understand, this is a very common area of a weak strike due to the thickness of Lincolns coat on the obverse... more metal flowing towards the obverse device causes this weakness on the reverse...
That makes more sense. I always thought it was a common place for the gunk to build up but your explination makes way more sense.
I do agree, It is an inherent design flaw that shows up when the presses are run at a faster speed. The metal just does not have enough time to Flow into the reverse design. The metal flows easier into the larger cavity of Abe lower bust.
