In the catalog Bob posted the handle looks just like the Wards Master Quality. Even the thong hole and leather thong is the same. I think they are both actually Plumb products. Plumb makes money selling both to Montgomery Wards and Shapleigh Hardware and the stores do the competition.
When I was a young lad (1960s) boating folks swore that Johnson outboards were superior to Evinrudes (or vice versa). I look at these now and see both were manufactured in Peterborough Ontario by the very same maker (OMC) and that the sole difference is paint and decals. I don't doubt that Plumb stamped their name on whatever passed their own quality control but what went out the door with other rollstamps was at the discretion of the commercial buyers. A current example of this is 'Best Made", they specify products from private industry but don't get their hands dirty either.