I'm sure that the one with "main" stamped on the handle was just one that was removed from a factory-equipped main breaker panel. I hate to think of the hundreds of panels with those breakers that I installed back in their heyday. If I had only held onto one breaker from each panel, I'd have lots of money now. Those things were pretty standard in my area.
Now if you really want to impress me, come up with a 200 amp version. I probably installed 100 panels with factory 200 amp mains. There probably aren't any out there to speak of for sale, but that's probably because they are still working.
Can you tell that I am (was) a PushMatic fan? How many residential panels do you know of with a copper BOLTED bus?
