1878 P Morgan. What's up with these denticles?

This is a third reverse Morgan. Broken R in trust, point of fourth right star broken off. Nothing else that jumps out at me but take a look at the denticles, obverse and reverse. The doubling may be machine-caused I can't tell. This covers about 70% of both rims. Not a lot of information in the literature about denticles. Ideas?
Rick



Rick
Proud recipient of YOU SUCK more than once and less than 100 times.
0
Comments
On the bottom rim you can see it.
-Amanda
I'm a YN working on a type set!
My Buffalo Nickel Website Home of the Quirky Buffaloes Collection!
Proud member of the CUFYNA