There is nothing wrong with 1964 and older silver US coins.
They are very recognizable for those in the know.
I was at a gun show last weekend, and some of the tables were buying/selling PM’s as well as guns, and they were offering spot for gold or the melt value for silver.
I remember my father quit smoking around 1964. At the time a pack of cigarettes was about 50 cents. Every time he normally would buy a pack of cigarettes he would save a silver dollar instead. He is still alive and he still has them. A LOT of them. The FACE value is huge...