Built for a customer in Singapore. The Scientist is 2-layer Victorinox model that includes the combo opener tool as well as the magnifying glass. This discontinued model is highly prized by collectors; even though it is not particularly old, it was not produced in large numbers and is fairly rare.
While it’s a shame to use and abuse an original one, this one is made from a Compact and an Explorer.
If you only want to carry a single 2-layer knife, i think it is a close call between this and an Victorinox Engineer (provided you don’t need scissors).
This example has OEM (unfinished) liners.