I don't know what my first folder was. I still have my first knife, though. It's 63 years old now. It is about a 3" blade, cheap metal but can be sharpened, full tang, genuine plastic imitation stag handle slabs pinned on, with a compass in the handle. Made in Japan back in 1950 when that meant cheap. My mother swears that I received it on my fourth
birthday and my dad gave me free rein with it. I have never been without some kind of knife since.