CD,
First and only one I've seen in person too. "I think" I've seen one other in a photo, but I'm not sure. It's a wonder what they could do with cast iron isn't it. If they tried to make that today they use stamped aluminum or plastic and it would last maybe a week.
Rodney,
I finally got a Hamilton Beech motor badged as a New Home. Has the bracket too. It runs and could be used except I need a screw to mount the motor. It's a 1/4" diameter screw, but the thread doesn't match anything I've got or can find. So I keep looking.
Joe