Antique 6 volt fan which has been stored in grandfathers home for years. Bench tested using a 6vdc battery charger and it ran. I had to start it by pushing blade. It ran then slowed down and stopped. Repeated and ran again. Probably needs brushes cleaned but I'm not knowledgeable enough to take it apart. I put a couple of drops on WD40 on blade shaft for lubrication. Can't guarantee its reliability as I am not one to repair electronics. But if you are, a rare find. 

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