Business coupe rear side windows were flat glass (no metal on bottom like wind up windows) mounted in a rubber channel, like the windshield and back glass.
.....color of the tag I posted really does look "hugger orange", but when I held the tag to the screen the picture was more yellow than orange.
The tag came off a junk yard Indiana & Michigan Electric Company meter readers company car. I scavanged it 30 or so years ago to lighten up one of my drag cars. It was a fleet car and the only option was a recirculating heater. [img]/ubbthreads/images/graemlins/
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