Steve, I like the real early knives & I feel these are the most difficult to see & handle.There is no set vintage as old is different to all of us.My idea is to just post the knife with no explanation & let it rip from there. My best hope is that the participation will be strong & we all learn.I know you have some Great Oldies & would love to see them.Thanks...My personal opinion,The older the better... GOD BLESS OUR TROOPS!!!