Got These Today 1971 D Half And 1776-1976 Bi

There should be a more exhaustive list of JFK half dollar varieties to look for in the CRH section of the forum. In my experience, other than the standard varieties, there are a number of errors to look for as well. I believe you have a minor die clash on the 1971 D.

Can you get another picture of the obverse, but have the light source to the left of the coin? I'm fairly certain I see die abrasion marks that reduced the width of the bridge of JFK's nose. I do see faint die clash marks on the reverse as well -- these are on the right side connecting the eagle's wing to the bundle of arrows. In the future, it will help to take pictures with full lighting on the coin. (I can't see the area to the left of the eagle that would be affected by a die clash.)

In the bicentennial halves, I've noticed that the ones minted in Denver will occasionally be Struck Through Grease on the reverse, obstructing some detail on the building and the INDEPENDENCE HALL lettering. You can also find Machine Doubling on all JFK halves, but it's especially neat to see it on the INDEPENDENCE HALL lettering.

In terms of value, you might be able to add a premium of a few bucks to each coin if you can find someone whose collecting niche they fit.

[Edit] I just wanted to add that it's not a die chip at the base of the eagle's tail on the 1971. This is a design feature that is present on both sides of the eagle's tail. The left side might be hidden in the shadows.