Was looking at more old racquets this last week, and noticed something odd. I was looking over an original Head Edge aluminum midsize, and lo and behold, its tube cross-section is the same as the original Prince in my possession. It also has a hand-engraved serial number of the same size and number style, engraved in the same exact spot as on the Prince (in the case of the Edge, it was "9211." It also had the same exact type of grip size sticker (located in the same exact spot as on the Prince), and had the same exact pallet and butt cap as the early Prince. The method and hardware for the throat fastening to the tube frame was identical, too.
Looks like there is rather more in common than meets the eye with Howard Head's old and newer products back in 1976!