Time for a closer look at more basic Torpedo gear, beginning with the "Super Mask".
Torpedo Super Mask
The caption reads: "
SUPER MASK. The mask with the widest vision, best fit and greatest comfort. Shaped frame and luxurious rubber strap.
Compensator. 31/-."
This diving mask appears to combine all the latest features in an early-1960s oval model, namely ear-clearing compensator bosses, a split strap and a metal rim with a top screw to keep the lens secure. The price was 31/-, meaning 31 Australian shillings or One Australian pound and 11 Australian shillings.
You will notice the twin hooks on the front of the mask, which I presume are there to assist in the process of squeezing the nostrils for equalisation purposes. Here is the a contemporary American mask with similar "equalising levers": The Voit 50 Fathom mask.
You may conclude from the original ad that Torpedo only ever marketed one model of diving mask, but this is not so. Here's an ASM ad from May/June 1961:
So at least two Torpedo masks were available in 1961: The Torpedo Compensator and the Torpedo Super. I have not come across, yet, any illustration, let alone further details, of the "Torpedo Compensator" mask.
In the following month's issue of ASM, "Dick Devesons" offered spare parts for diving masks, including the Torpedo:
Diving masks may have been harder to replace in far-flung Australia in those days and "Torpedo Safety Glasses" and "Torpedo Tinted Lenses" provided options for purchasers when it came to the faceplates. Diving masks were easier to disassemble back then.