I bought a house that had a water heater in it the age of the house. It was as if I was walking into a brand new home, and everything,water heater included was in perfect condition. I had to have it replaced to buy it, but insisted on keeping it because it looked so cool. It is a Hoffman alumilux with a silver plate on it that has the model and year etched in it. It is a 1960. Any idea if it is worth anything in working condition?