These are the oldest knives in my collection as in they are old AND they are some of the first knives I got when I was a 10 or 11 year old boy.  I was wondering if anyone has any info on them.  I have read a lot about the Joseph Rogers and Sons name.  The Maltese cross and the 6 pointed star.  The No 6 Norfolk st address.  All of it is super interesting and I suggest you look into it, but for the sake of brevity I'll not go into the nitty gritty.  My trouble has been dating these knives.  I have been able to narrow it down the the first half of the 20th century but would like to try and narrow it a little further.  Any suggestions?