What stands out about this piece is the GROBARPART tag that does not rub off easily.
General Electric CR9500A100A2A Solenoid 600V Max 115V
A nice touch is the extra clearance inside the heavy duty body, which helps resist dust and moisture ingress.
You will find that the heavy duty design keeps the contacts seating firmly, even after many cycles of operation heavy duty relay looks like it could live in a workshop and still perform day after day reliably.