My father gave me knives long before I was 5, but I did not start to carry on a regular basis until I was 5 years old.
That knife was a promotional gift to my father by a salesman, and it was a real strange folder.
It was all steel. The blade folded sideways into a u-shaped handle and then a another piece of metal rotated over that. The style must have a name, but I have no idea what it is, and I have not seen one for decades.
I gave the knife to my grandson.
That style of knife is called a "funny folder." A.G. Russel still sells them, I believe. They were widely used as promotional knives due to the wow factor of how they fold.