Here are some others from the masters of black, Western Electric.
On this one I just love the way the access door also recesses the meter.
Simple lines as on the RCA transmitter, but what caught my eye was how the relief around the edges and screws comes across as ornamental.
and here is a photo from someone who really "sees" and respects the beauty.
Quad QA12/P Amplifier - This is pretty close to Quads first amplifier. I got to put my hands on one of these once very cool early British amplifiers. http://www.itishifi.com