I've only seen a handful of these in my 15+ years of collecting and studying Socony-Vacuum and Mobil items. Due to the nature of these heat lamps they melted with too big of a bulb or the plastic got brittle from the heat and suffered damage. This one is in pretty good shape. Just thought I would make the members aware of it. They're neat items.....
Darin

https://www.ebay.com/itm/vintage-Pe...mp-turning-motion-from-heat/274019333326

Mobil Special Heat Lamp.jpg

Darin Sheffer
Always looking for Mobil and Marathon items I don't already have!