Arty Mystery Box

[B. Harris]

Hello All,
I have of recent found two nice wooden boxes that I have been told they were for artillery munitions. Came from the Billy Jamieson collection from the museum in Niagara Falls, Canadian side. (Egyptian Mummy's)
One Box is Marked T3 over a 1 company marked C B-C 43
NO OTHER markings

They have removable wedge type dividers, dovetail construction, various pull strings and wood screw closures.

Any help to ID these fellows would be helpful.
Thanks,
Harris