That fine line...

[pen]

It wasn't until the early 80's that they started getting UL stamps. Which means that yours probably does not have a tag anywhere.

Many of the 1976's had a star w/ '76 on the door for the bicentennial edition. At least on the grandpa bears, Not sure if any grandma's came w/ that though.

pen

 

[WES999]

800-850 on a probe thermometer right? Or on a magnetic type? 500 on a magnetic type is a lot different than 500 on a probe type thermometer.

pen

I am using a J thermocouple probe inserted about 4" in the flue pipe up about 40" from the collar.
The probe reads about 200* higher than the magnetic thermometer.