Help Me With These Kennedy Halves

your 96 is exactly what you think it is. a coin that took a hit After it left the mint so it is worth .50 cents the 2000 is a strike through probably grease also worth 50 cents and on your 73 I don't see anything out of the ordinary. if the reverse also has that off center look then it may be off center if not then it is just something that happens. look at 9 out of 10 coins from the 90's to present and you will see the same thing also no premium
hope that helps
Gary

I'll get a micrometer on the year 2000 coin. I can't believe it'd be from grease. The areas where there is lacking lettering are very much lower than the rim on the obverse which indicates a thinner planchet. If this is so, would it mean anything significant?

How does one know if damage occured in the mint or outside? Of course a coin could be stuck somewhere in the machines and spit out. This is in reference to the 1996 one, but also, in a way, the 1973 which appears as though it got fed back into another machine after it got stamped.