The Schrade Old Timer lock back might be one of the pre-china made knives, thus a bit more acceptable/desirable (to some) than the current made in China Schrade's.
Other than that, I got nothing. I don't know squat about the butterfly knives (other than they are not entirely legal to own in a lot of places) and could not make out the tang stamps on the barlow, stockman, and the one with "TL26" on the handle, to give an uninformed opinion on those patterns.