Also has the original thermostat with some silvery liquid in a little glass tube.
It looks a bit like one of those antique thermometers seen today in museums and films about Florence Nightingale.
Wow. Our place is the same vintage, 1952.
When we bought it in ‘83, it had the original 1952 furnace. We’ve upgraded everything slowing since we bought it. We replaced the furnace once and, a few years after that, put in central AC. We are on our third water heater (natural gas, too). Both the furnace and AC are still working fine. The original furnace was a real energy hog and I wasn’t sad to see it go.
I put in a digital Honeywell thermostat when we put in the furnace that is still on the wall. It’s not on the Internet, but it does a great job of changing the heating and cooling set points up to four times a day.