If you need a convenient E-tool that's built tough and is super collectible, you've found a great example. Used by the Swiss Military for a good chunk of the 20th century, this design was copied by many different militaries for its design and practicality. Various dates on these. Expect these to not be perfect, as they were used by soldiers in the field. That being said, you won't receive something that's garbage.
LIMITED QUANTITIES ON THESE!