If you look in any Red Book, you will find that 1964 half dollars contain .36169 ounces of silver and 1965-1970 half dollars contain .1479 ounces of silver. Chris
These pennies are damaged. You should have started a separate thread for them. It's easier to find them in the future. Chris
As I assume you know, the 1964s are 90% and those dated 1965-69 (along with 70-D) are 40%. The mentioned accented hair is a proof variety. There are many known varieties for early Kennedy halves, so if this is what you're interested in, I would respectfully suggest you invest some time into familiarizing yourself with the different types and how to properly identify them. If you find something interesting or with potential, then post it individually. I did take a look at a couple of the posted obverse photos, but noticed nothing noteworthy. There's simply too many thumbnail photos to easily go through each and every one.
