Hi Hombre.
I owned one IDENTICAL to the first one you posted above. Believe I paid about $12.00USD for it in 1965. Actually, my Mother had to buy it for me since I was not 18 years old yet, only 15. Took it to some local guy and had all three blades sharpend. Think that was $1.50. I remember the belt loop came loose and had to take it to the local shoe repair to get it stiched better. LOL
Carried it on many exotic expeditions - down the street to the local forest preserve. LOL
As they say: Thanks for the memories!
Rick.