Rival Crock-Pot from ~1975, still have the owners manual and a hardback copy of the Rival Crock-Pot Cooking book.
Damn that IS old. Still use it?
I just used it two days ago - works perfectly. I use those crock-pot liner bags now instead of putting food directly into the crock-pot, saves wear and tear from scrubbing and lessens the risk of being dropped into the sink while washing it.