You have a very good memory below are photographs of both types which are the same as yours. The one with M-H raised in the casting has the decal on, the other has no markings but the tag is riveted on.
I have seen some in Canada with different blade holders etc.
Did you know there is a third variation? one which looks very simililar to the often seen Mc Cormick knife grinder.
I have not found one of these yet, attached is a copy of the two sided brochure for "The Jewel" knife grinder sold by M-H in England.