Some of these masks look kind of familiar, the last one reminds me of an Occhio mask, but that is purely from memory as I have not checked it. The stainless steel clip frame mask bar the plastic blue buckles looks like something from GSD. When the latter went out of business it is possible their moulding dies were put on the market and Safari Sub snapped them up. Ditto for the Titan handle, once Mares concentrated on their rear handle floating pneumatic guns they scrubbed all the sinkers and that included the Titan models. The only gun of that series they still made was the hero Bazooka which no one probably ever used but looked good on the wall. Too long to load, too long to swing and weighed too much, the few they continued to make were most likely from stocks of spares.
Just checking and Cressi has reused the Occhio name and changed the shape, in fact there is a Super Occhio mask as well. My memory is of the mask as first introduced. The advantage of twin lens masks was not only closer positioning to the eyes but also the ability to fit optical correction lenses in some models. Prior to that divers had lenses bonded to the glass face plate by specialists using a product that you heat up, something (friars?) balsam, but cannot remember the proprietary name. My Dad had such a dive mask, a Cressi or Mares Vedo which had alloy screw in lens holders and a rather odd appearance as a consequence. Over twenty years ago and probably more like 30, so hard to recall exactly.