I think it was an Ulster from the early 1970s, if I had to name a year I would say 1972. It looks like the old Schrade Old Timer box, or an early version of it. I don't recall the "THE" before "OLD TIMER" on other boxes I have seen, but Codger would probably know.
I just went back to the auction on ebay & saw the questions asked and noticed it doesn't have any tang stamping at all. Hummmmm
Inconsistencies in tang stampings in this time frame are not uncommon. Goins says Ulster was discontinued in 1972. If you have been following the discussions in this forum you no doubt know that there is no such thing as cut and dried dates, (or rarely), where Albert Baer & Schrade/Ulster/Kingston/Imperial is concerned. I have a bone handled knife, with the OLD TIMER shield, tang stamped ULSTER/U.S.A. without any model number on it. Larry (lrv) & I think it is a 50OT. A pretty unusual Ulster Old Timer.
There are anomalies where Ulster/Kingston/Schrade/Imperial are concerned. But my take on the knife on ebay is that it is an unstamped 58OT, probably made about the time of the change over from Ulster to Schrade, circa late 1972 to early 1973.
Dale
PS- I hate it when I get beat be $1