56 Duo-Matic
Wow Anthony you are making great progress, John E. is the go to expert on these machines.
It is neat that the water heater cleaned up so well and that you found the wattage and voltage stamp on it as well. That old copper sheathed heater will put out over 4,500watts when you run it on 240 volts that we have now, as you can see it was made in a time when we actually had just 220 volts in this country, this why people who are not well informed still call 240 voltage 220 volts.
Looking forward to seeing this machine running.
John L.