The online community of knife collectors, A Knife Family Forged in Steel
some other clues about the age of that knife:
1) Chromium plating was developed in the 1920s.
2) The rounded pommel fell out of favor after WW2, the bird's head shape being more prevalent.
I would guess that knife was made in the 1930s.
Great info. Ricky! My guess of its age would be late 1920s - 1930s.