Self Contained Breathing Apparatus 1950S Diving Equip

This vintage mine safety breathing apparatus was uesd in the 1950's to go diving before the scuba system was available. On the box is printed mien safety appliances co efficiency service safe pittsburgh, pa. This comes with the mine safety eighth edition booklet from 1942, 34 pages, in good solid condition.

This comes with what looks like a snorkel, he used electrical tape no some of the connections and appears to be complete and in good condition. The box with the system weihgs just over 40 lbs, serial #b8956, i don't see a model number. Because of the weight i'll list this as a pickup but will work with the winning bidder on what method they would prefer and charge actual cost of shipping. This may have been used for some shallow water diving, as i was told, but that is a highly risky and dangerous behavior. I do not recommend or encourage the use of this product for diving.