Good Day. 1964 Set, No Mint Mark And As Described. SMS?

Your post was moved to the appropriate forum for the proper attention.

This is an after market holder, they were not made , or distributed by the US mint.

Hello Moon

The mint issued Special Mint Sets in 1965, '66 and '67. They looked like this:

I was completely unaware of the '64 SMS. Your post prompted me to do some reading. Very interesting! Thanks

Thank you. Is it a clear Whitman plastic case?

It would have if it was actually packaged, they weren't.

From my knowledge and understanding of the 1964 SMS coins, they were all found in an estate sale of a mint Director that had passed away and were all bought from that estate sale, and likely all graded at this point. You will never find a 1964 SMS coin in circulation, You will never find a complete set in OGP or pieced together in aftermarket packaging to be cherry picked anymore because they all got bought and graded and sold by various auction houses and still sell from time to time to change hands in those auction houses.

Theory is they were test strikes for the 65.66.67 SMS coins to see how they would turn out. Description of the first Stacks and Bowers auction was: "The [half dollar] has a fully satiny obverse and a somewhat reflective surface," "The strike on all the coins is far sharper than is seen even on the Special Mint Sets. We suspect that these were struck as an experiment to determine the sort of finish the Mint would use from 1965 through 1967."
The Lincoln Cent, Jefferson nickel, Roosevelt dime, and Washington quarter in that same set also exhibited the same surface characteristics as the 1964 SMS Kennedy half dollar.
The five coins were offered in a nondescript snap-tight plastic coin holder.
All sold a little here and there through the 1990s and 2000s so they don't compete with each other and bring down the sale prices.

Just about everywhere and on youtube the "coins you can find worth money!" story is nice and gets you thinking if you look you might hit the lotto, But coming across one coin somewhere that nobody knows about for cherry picking would be astronomical, and finding a whole set 1964 SMS to cherry pick would be about the same odds as the entire universe collapsing 5 seconds after you read this.