Hey Tom,
Good topic.
I've been a little busy, so I haven't had time to post.
Your Buck 105 (Pathfinder) was my first serious knife. Purchased when I was about 17 ... 1970.
I gave it to my youngest Son a few years ago.
Here's a a knife I've had for a while ... TOTALLY MINT ... NEVER USED.
A Lile Backpacker - No-Dot, with cocobolo handle.