Opinel has only been in business since 1890, but the design is a much older French peasants knife. Remove the modern text and I think the French voyageurs would have had something very close.
https://www.opinel-usa.com/collecti...opinel-knives-no-7-carbon-steel-folding-knife
I prefer the Opinel No.5 Carbon Steel ....,
It doesn't have the modern locking ring, and it's also carbon steel not stainless steel. Except for the modern markings and perhaps the groove for the finger nail, this is essentially an 18th century folding knife.
LD