Spark Plug question

[Binger]

Hello all. I was digging around the garage and found some used Spark plugs and had a question about them. I found some Champion 2COM and 3COM Plugs. All I could find online about them is that they are equivalent to the Autolite 3076 I have been running in my coupe. I was wondering if anybody has had any luck running them in their car. Which one is hotter? I found six of the 3COM which leads me to believe they came out of my 1922 Buick many years ago and I found 4 of the 2COM which makes me think they once lived in an A. I like the old look of these plugs better than the modern looking autolites I am currently running. My car has a stock A engine with a single Stromburg 97, a tube header and a newer Mallory dual point in it. I am also at 6000' elevation. Has anybody had any luck with any of these plugs? Thanks in advance.

John