Vintage U.S. Divers Co. Aqua Lung Equi-Purge Full Thermal Temper Glass SCUBA Mask
Awesome mask!  Very nice vintage used condition, tons of life left.  All of the rubber parts are pliable and show no signs of dry-rot.  The metal parts are clean with no rust.  Glass is nice with some very light scratches associated with normal use, not abuse.  Glass could use a proper cleaning.  Please view the photos closely as they show the exact SCUBA mask you will receive.