On now to what I promised a few days ago, a look at a couple of early-1950s Pirelli masks, the Nereo and the Triton mentioned in Fabio Vitale's article
VIAGGIO NELLE ATTREZZATURE SPORTIVE DEGLI ANNI ’50 from which I reproduce a somewhat low-resolution image of the Nereo along with its caption:
Italian: Maschera Nereo Pirelli. Carcassa in gomma lucida di colore nera, verde o blu che racchiude, con un maggiore ispessimento del bordo esterno, l’ampio cristallo ovale; mentre il bordo facciale è assottigliato per favorire l’aderenza a qualsiasi forma di viso.
Rough translation: "Pirelli Nereo Mask. Glossy black, green or blue coloured rubber body enclosing, with increased thickening of the outer edge, the large oval lens; while the facial border is thinned to facilitate adhesion to any facial shape."
So the body of the mask is thicker where it retains the lens within a groove on the front edge and thinner where it is meant to fit snugly on the wearer's face. Masks with the thiinnest and hence most adhesive facial edges came to be known as models with feather edge skirts.
The Nereo seems to have been discontinued before the end of the 1950s. A similar fate awaited our other mask of the day, the Tritone:
Italian: "Maschera Tritone Pirelli. Carcassa in gomma rigida colorata e cristallo bloccato con ghiera."
Rough translation: "Pirelli Tritone Mask. Rigid coloured rubber body and lens retained by band."
Apologies again for the low resolution; this is my only picture of the mask. It's still possible to work out the reason for the early demise of the design: the exclusion of the nose from the mask interior and hence its inability to redress the air pressure imbalance inside the mask with the water pressure outside the mask. The look is more reminiscent of the 1930s than the 1950s.
Finally, the names chosen for the two models. "Nereo" is Italian for "Nereus" (Ancient Greek: Νηρεύς), who in Greek mythology was the eldest son of Gaia (the Earth) and of her son, Pontus (the Sea). Nereus and Doris became the parents of 50 daughters (the Nereids - sea nymphs) and a son (Nerites), with whom Nereus lived in the Aegean Sea.
"Tritone" is Italian for "Triton" (Ancient Greek: Τρίτων), who was a Greek god of the sea, the son of Poseidon and Amphitrite, god and goddess of the sea respectively. Triton lived with his parents, in a golden palace on the bottom of the sea.
I'm going to leave it there for today. I will be returning midweek with a review of another Pirelli mask, the "Egeo", which made its début in 1959, standing the test of time sufficiently to remain in production until the mid-1970s. Keep safe and stay well in the meantime.