It was the first knife I purchased with my own money actually.
If I remember correctly my father had to order it from some catalog company in Ireland. It was one of the only places you could get it at the time-this was in 1972. I believe it cost me $13.00 including shipping. That was alot of yard-raking and gutter cleaning for me back then. I was 9 years old.
If possible I'll post a pic. I must confess it is very ugly. I carried it everywhere and did everything to it and with it. In one of my most jack-ass moments of my youth I even took a wood burner to it and engraved my name in the scale-DOH.
Here are the tools that mine has:
Large blade
small blade
scissor
hook disorger\scaler
hack-saw\file
wood saw
cap lifter\large screwdriver\wire stripper
can opener\small screwdriver
awl (no thread eye)
corkscrew
reamer\thin file (this is a long thin implement with a very sharp point and very fine file, it is about 1/8" square overall)
tweezers (steel)
toothpick
The lanyard was a 'bail' type (I think that is what it's called)that attached to both sides of the handle scales via rivet. It is long since gone

. Mine is almost exactly 1" thick. It came without any sheath or sharpening stone.
It was a good model. And yes, I do think it was called the Champion.
I'll have to go find a pic of the Explorer to compare.
EDIT: Just checked. The model I have is much closer to the Swiss Army Ranger, not the Explorer.
Mongrel