Have you ever seen any Dart, Valiant, Demon or Duster with a rear window defroster?

I have a 69 340 swinger that came factory equipped with rear defogger/deicer. It's a two speed blower fan style. I'll try and post a pic of the switch, also IIRC it says "rear air" .
OK here we have a Hamtramck built 340 auto swinger that was in cox creek Kentucky for at least the first 15 years of its life equipped with rear defogger and factory A/C. So not a northern climate or a desert climate but someone was concerned with both heat and frost. Go figure

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