I agree with Luis H, I also agree it is possibly an artistic concept.
A similar Healthways regulator was designed by the late Dick Anderson and appears in the 1960 + Heathway catalog as part # 1665 SCUBA Air single hose regulator.
The regulator with the same "first stage configuration" also appears in the 1962 SCUBA Pro Catalog (Then a division of Healthways-) on page 10 & 11 as part # 7110, SCUBA Air "J" single hose two stage regulator, with built in spring loaded constant reserve (J valve) price $77.50 with and also on page 12 &13 part # 7111, SCUBA Air 300 single hose two stage regulator, with built in sonic reserve price $87.50
Please bear in mind when Gus and Dick purchased the name SCUBA Pro in the Heathway's bankruptcy they also acquired certain items of equipment, and used rebranded Heathway's equipment for a number of years until they could develop the company as a profitable enterprise and begin marketing their own products.
The 1964 SCUBA Pro catalog did not feature the regulator in question but did feature a "SCUBA Pro" regulator part # 7105, single hose two stage regulator price $50.00
The regulator in question was possibly a Heathway's regulator which was available in limited quantities, or may have just been a way to announce to US divers, Voit, Dacor and Swimaster that there was a new player in the game.
SDM