It is a very good stove. It is an "Oak," type stove which means it has a direct draft as opposed to a base burner or base heater. These were designed for multi fuel use. You can burn wood, Bituminous Coal or Anthracite in them. These stoves were numbered and classified by the size of the fire pot in most cases. The 216 means that it has a 16 inch fire pot, enough to hold around 60 pounds of Nut sized coal. It is a good size for most homes. Some of these stoves were made as, "double heaters," that is they have a dual function. They provide both radiant and convective heat. Andes Stoves are among the best made stoves and they were expensive when they were new.
What are you planning to do with the stove?
If you have any more questions feel free to ask.