Hello I would like to know how many types of heater valves there were in 1960. I have this one on my tbird with A/C:
I can't find it as spare part. I saw several different types in vendors catalogues but nothing with the copper coil like mine. I'm not sure it does not work but I do have a leak (had "fog" when driving and water on passenger side). Although I think the leak is in the radiator, it appears the valve can't fully close water passage..