Great info! Many thanks,
Fede, I have exchanged information with others who can document the use of BKIW with Vormals or fruher well before 1933, including solid documentation back to 1926.
I understand that BKIW nor the trademark can be used to date a box, but at a minimum, we should be able to identify a general time frame for a given box style and this will help.
JPeelen, I doubt these are old boxes reused for the BKIW years since the top labels are printed printed with the BKIW address and the side label with D W & M is printed on a side label with what looks like identical paper. T\I have documented more of the BKIW boxes with DW&M then the earlier DWM boxes with this marking. None of the boxes I have documented from 1897-1911 have this mark.
As you mention, BKIW was in effect from about 1922, and from or formally DWM didn’t officially become part of the name until 1933, but I have not documented a single box with BKIW and without the "formally DWM).The “DWM” doesn’t show up on any of the early (Pre-BKIW) boxes that we have documented so far.