this is a 1968 d penny red with carbon spots..would like to know is this considered dd on united states of america..thanks for any help
No. This is MD. Mechanical/Machine/Strike doubling…it has to do with the movement or shift of the planchet as it is being struck. Flat and shelf-like, not hub doubling. Go to Wexler and study his section on “Worthless Doubling”…imo…Spark