Vintage 1973 Coleman 512A700 3500BTU green catalytic camp heater 11/73

Description

This is a 3500BTU catalytic heater by Coleman. It measures 9 inches in diameter by 10 1/2 inches tall. The date on the bottom is 11/73. There is a little rust on the dome but the heater is in good condition. It hasn't been tested. It comes with the original box but the box is rough. Please contact me if you need more information.
Thanks for looking!