Gary and other posters on this thread. Believe me I'm more frustrated than you are.. I have to find a outlet to get the information out there and yet keep the VALUE of what I have collected . That is complicated and time consuming. Would collectors buy a series of factual articles or books???
Gary I will no longer post on a thread if I'm not willing to share ALL the information I have on that subject..

P.S. I do not have information on how knives were marked by F. Dula after 1945