Bicentennial Ike Type 1 And 2

I went to the flea market last week and purchased a shoe box containing three packets of 1975 and 1976 mint sets. The old guy who sold them to me only charged me $25. Very strange! I don't know too much about them until reading up and finding out there are two types of Ikes. I will post them up with the first being the 1975 P and D then the 1976. They all look the same and they do look great compared to ones I've seen in the past. I wanted to get someone's opinion before taking them to a dealer.

Thank you