I have a pair of these. These bring back childhood memories actually, my dad bought me a pair of these and stuck on in my bedroom lamp. Same for the early 00s era GEs, had some of those in my bedroom ceiling light at my mom's house.

Yes, the old "bug light in the bedroom lamp" trick! Fun times! I always recalled as a kid in the '70s that the GE and Westinghouse bug lights were much more orange while the Sylvanias were a neon or canary yellow. I always liked the look of the orange better.