Chris,
Swiss multi-blade screwdriver normally issued with Swiss rifles of various models/makes.
The thumb-screw on the side loosens the blade; which has two differing sized flat blades. Nice fit on luger grip screws; so many folks added them to their luger accessories.
The muzzle cover in Ron Wood's posting is a Swiss/French-made (if I recall correctly) muzzle cover issued in the 1950's or so. Not issued with Swiss Ordnance lugers, but nice to add to one's collection.
Ron was probably lucky enough to buy the Luthy covers for $ 5 each in the 1960-70's.
I found myself lucky (or stupid...) and willing to pay $ 125 for mine about 3 years ago. I found a 2nd. one at a Tulsa gun show buried in junk parts boxes and was glad to pay $ 40. That owner may not have known what he had.
Here is one a LF member posted up about a year or so ago :
