Thanks trenchwarfare, I'll see if I can find some information on the Suya Company..... Ok found something "Suya Shōten Co. Ltd with To inspection stamp". Time to do some more reading.
pbleed, You must be psychic
to say that my father "wasted his money". What do you think he paid?
In any case, I would enjoy seeing a picture of your WWII era Navy Dagger for comparison.