What era are these Fed Premiums from?

Last year a local Canadian Tire had a box of 7mm like that in stock. I figure it must have fallen behind a desk in the mid-80's and recently put back on the shelf. I should have asked them to sell them to me at 80's prices.
 
Thanks guys, I got them from my uncle and we weren't sure how old they were. They look brand new, no staining or corrosion anywhere, I'm sure they will shoot well.
 
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