It looks like Hay-Budden made in Brooklyn NY. There may be a serial number on the side of the base under the horn that can help you narrow down the manufacturing date.
The saw is model 2012-2a, wiring schematic #505888-7. I have the manual but unfortunatly it doesn't include a wiring diagram. If I can't find the diagram for the saw I could possibly go by using the schematic for the Extron Series 100 Dc Motor Control that runs it. Thanks in advance.
I feel like the manufacturer provided bits for all those brands and would have had the equipment to stamp each with it's respective logo. All the other examples I can find are stamped a single time.
This bit must have been stamped with every die on hand. It's marked "CONVAL CO. EXPANSIV-E pat mar. 18 1913 U.S.A." twice, as well as "CRAFTSMAN TOOLS AN", "BLUE GRASS B.H.&M.CO.", "B.H.&M.CO.", and "H.S.B.CO. Our Very Best".
Thanks for the photos. I'm leaning towards Cornwell. I did a bit of searching and this is the closest I've found, seems to be pretty much the same other than a different drawer and lock configuration.