Hamilton Stamp & Stencil
This Canadian maker is the only one I have so far. The hallmark says : HAM STAMP & STENCIL HAMILTON ON, so I have made the leap to assuming that the HAM stands for HAMILTON. I doubt that this is a last name like the C.T.HAM Manufacturing Company. that made lanterns in the US.
I have no further information on this maker. The logo
design on this check can be found on makerless checks, so you can't assume
too much about dates. I am reluctant to clean the makers hallmark because
of the raised letters. This maker is a tough one to find.