Rothlisberger was the only official maker of the swiss soldier knife (other than Victorinox and Wenger), after 1921, and only for 2 years 1956 & 1957
the second photo I posted is of a 1957 Rothlisberger soldier knife...but they also made officer knives around this same time....1950s/1960s...under two brand names ERINOX and SAPHIR. they are EXTREMELY rare and i have only been able to find 2 of each. I have a friend in New York who owns one more but these are the only ones I know of!
see these videos for more information on this maker. the first is a soldiers knife and the second shows a Rothlisberger officer knife beside its Victorinox and Wenger counterparts from the same period