not a lot of these out there...mine has no markings but made 1964-1966....s/s blade and no markings of that as well, which was typical in this time zone...as I understand...BUT I'm not the expert!! A low S...very interesting!! All are wonderful...actually these are 2 that I had to sell for my father, and his friend...I could not find, off hand, a photo of mine... :-)Rocky