Nation's Attic 2024 Diving Into History

General Aquadyne DM-5 Mask circa 1971

The auction will start in __ days and __ hours

Start price: $250

Estimated price: $500 - $800

Buyer's premium: 20%

Sales Tax: On the lot's price and buyer's premium

Based in Santa Barbara, California, General Aquadyne introduced this mask to market in 1971. It competed with masks by Kirby Morgan and others and was evaluated by the US Navy Experimental Diving Unit which issued a 24 page Report in March 1978 stating “The General Aquadyne DM-5 Mask was tested by NEDU in accordance with MIL—R—24169A. Results of unmanned tests which evaluated breathing resistance, side block and umbilical pressure drop, and breathing work, showed that the mask meets mil spec requirements. The mask is not recommended for inclusion on the list of equipment Authorized for Navy use because the U.S.N. currently has no requirement for this type of equipment in addition to its own USN MK1 Mod 0 Mask.” The mask is complete with components functioning and in very, very, good overall condition. There are not many surviving it this overall condition, which is almost New Old Stock, making this one basically a museum – standard example that is over a half a century old.


All items will be shipped with a signature required upon delivery and full insurance either via FedEx or the USPS Priority Mail. Worldwide shipping is available; however, no ocean freight will be offered on large items. DHL Express is an option for international shipments under 600 pounds via air. Payment via bank wire for customers outside the USA is required. A shipping quote prior to the auction can be provided by emailing your postal code. International bidders are advised that some countries do not allow the importation of knives. Nations Attic is not responsible for shipping charges going or coming back if your countries customs denies delivery. Rejected items can be consigned into a future sale as there are no refunds.