OK, so I took it out of the drawer and brought it out to my office to verify the details, 'cuz I've been learning my memory isn't to be trusted anymore..
First of all, I should have said, "early '72", because that's when I went thru TG (first memory error) and upon further observation, my sheath is in waaay worse shape than the one on ePay.
And having it my hand convinced me - I couldn't sell this old friend, even if it is some sort of antique museum piece now. So I will put it away in a safe place with a 3X5 card telling my history with it, so when I get run over by a bus my kids will know what it really is and not throw it out..
Then I'll go find something newer (and less valuable/meaningful

) I can carry with me.
Thank You all for your wisdom!
Hartley
p.s. I did the calculation - if I had put the money I spent on it ($40, I think) in the bank at 5% it would have grown to $266 - to reach $700 would take an interest rate of 7.6% - not a bad ROI, really. Now see if my wife agrees when I go and buy a really nice replacement..