hot water heater vs water heater...
...true, the "hot" is redundant, but it's really only an error if the person reading or hearing it doesn't understand, "frigerator," "rot iron furniture," "chester drawers"...you still know what they mean.
As a former Plumbing buyer for a huge hardware chain here in California of which water heaters were a major contributor, I'd say if that little Homart lasted 52 years you certainly got your money's worth and then some. It must have been drinking mineral and sediment-free water for most of it's life.
As a kid we would "vacation" at a remote cabin in Northern California that belonged to a friend of my Dad who would go hunting while we were there. When I say "remote" I mean it, no electricity and no generator, just propane for the stove and the Servel. You had to park hundreds of feet away on a dirt road and walk to the cabin (I guess vacation wasn't the right word to use.) The water supply was gravity-fed from a tank kept filled by a spring. The water heater was on the outside and looked like the boiler on a ship. You built a fire in the front, closed the door and eventually you could do the dishes or take a shower. My Mom would let me fire the heater up which was about the only "fun" thing to do at this mountain prison and since I was a junior pyromaniac I'd have that thing going like a blast furnace. It would make this loud clacking noise and my Mom always feared it was going to blow up. You could cook pasta with the water coming out of the kitchen faucet...mucho caliente'.