Holy Laundry Appliance, Batman!!!
Ken,
That is a BEAUTIFUL dryer - both when it was new and now. Someone took very good care of that one. So glad you were able to get it, even if it took a while to make happen.
The owners manual/installation instructions for these early "High Speed" dryers showed a flexible rubber boot that could be installed on the wall vent and would fit into that recess on the back of the dryer, so no flexible hose was necessary - just push the dryer back against the boot and voila, you're in business. I've never found out exactly what that boot was but thought that was such an awesome idea. Have you (or anyone else) ever encountered this type of installation?
lawrence