Al,
Have had a look at quite a few old trucks and the most likely is 1917 - 18 International. They made a weird truck with the strange shape "bonnet" in this particular year. It was two ton / four ton unit which this old jigger seems to be around. The AC Mack had a grille / air venting down each side and this seems to rule out that this is the model. If the picture is from overseas somewhere that may put a different slant on the idea.
I am unable to turn it up in any musuems so far.
Regards Mike :confused: :D