I can't believe it myself - but I found my first real EDC knife - it's an old budget Victorinox Waiter/Bartender model.
This was my EDC from Jan/1982 until about Feb/1988 when I replaced it with a Victorinox Scientist.
As you can see the logo has worn off completely from the pocket carry - even the closeup of the logo area doesn't show much -
The logo is not the usual scalloped shield - but a much simpler regular rounded triangular shield with Swiss cross - and being a budget model it was press-in printed silver as opposed to the regular full-priced models' embedded metal logos.
If you're dubious that this knife had been my EDC for over 6 years - when the handles still look pretty nice and the only evidence seems to be that the logo has worn off.......
Well, I found that one could polish the Cellidor handles with car polish and bring them back. Deeper scratches could be minimized by using metal polish or even the rougher car rubbing compound - then finish off with good car polish.
That is until I figured out I could carry the knife in a pouch -
this is my second Scientist circa Oct/1989 that I carried until Feb/1993 (I lost my first one Feb/1988-Aug/1989) - that's the well worn chamoise leather pouch I made for the knife. (I now just use a small SackUp pouch)
Condition is almost mint for the handles (thanks to the pouch) - but blade and screwdriver show wear.
Show us a pic of your first/oldest EDC please?