Sun Mar 15, 2015 10:26 pm
I just checked and I actually have the full-face mask with that mouthpiece adapter.
There is no identifying labels on the mask, but it was sold by US Divers at one time under their commercial diving division. I bought the mask because I recognized it. We sold it at Divers Service Center in PR.
It is shown in the following US Divers catalogs:
1972 page 36 Mark-1 Professional PN:5205 Sold for $69.95
1973 page 37 Mark-1 Professional PN:5205 Sold for $69.95
1974 Page 45
1975 Page 43
I will try to take some pictures and post them, hopefully tomorrow evening. I will try to show some details.
Luis
Buceador con escafandra autónoma clásica.