Has anyone ever seen one of these before ?
No. Can you post an inside picture?
I agree that would help, maybe even it will show the label on the inside.
If they end up buying the house. A client sent me this asking about it. I have sent it to 2 electricians and they have no idea haha
I have one similar in my shed… That would be about the only place I would use it.
Have a look at GE’s PowerMark Gold 125 Amp 4-Space 8-Circuit Indoor Main Lug Circuit Breaker Panel
Agreed, see them frequently.
Thermoplastic Power Mark - seen it in Mobil homes.