That desbar style I've had for several years. I just got the other two. Habitat Restore has been a good source for this stuff, these all came from there.
The Circle F and Sierra both have green grounding screws. The Sierra also has push in wiring option also. It seems to be a Spec Grade item because it's quite well built and seems to have brass mounting strap. I've also not seen a receptacle to have the voltage and amperage on the face as it has. When did Sierra stop making devices? I remember they too had a desbar like receptacle but it fit a decorator plate that was narrower.
There were three of the Circle F rockers, and all seemed to be NOS. I just got one though.
