Since joining Blade Forums:
Rough Rider, Buck, GEC (2 GEC I received as a gift that the pattern wasn't for me: too small or uncomfortable in my hand during use.) Offshore Marbles, Off Shore Schrade family (includes Imperial Ireland), Schrade USA, SAK, No Name "Made in USA", Opinel, Cold Steel KUDU and ELAND, Leatherman Wingman, ... and a couple Cold Steel machete. Not sure what else.
I honestly don't remember what I gave away/traded way in the 1965 to 2000 period. I think at least one Western L66, Ontario 499, and a Ka-Bar "Marine Fighting Knife", a (USA) Old Timer Sharp Finger. . Might have been a couple Old Timer "Schrade+" 7OT and 6OT in that period as well.
I've never sold a knife for cash. I have traded two or three for something I needed more, usually with my adding a little cash to boot.