⭕ Authentic beautiful 12 bolt,4 light US NAVY Desco diving helmet.It is in original and perfect conditions with all original parts.In the tag can reads:United States Navy,MARK V-MOD-1 Serial No.3099 DATE OF MFG.1-4-46 Diving Equipment & Supply Co.Inc.and it has the US Navy anchor stamped.The breastplate and the bonnet has the serial number # 3099 stamped inside on the neck ring,all numbers matched.The brales are stamped with numbers 11-22-33-44 and the non return valve is stamped with all Desco details.It has also included the air control valve with all Desco details and US Navy achor stamped.The air pasajes inside are well and all valves works pefectly.All the port Light are in very good conditions and the front window open very well.Helmet in very beautiful contidition,only minor dents on the top.Weight Aprox.24 Kilograms.Maker:Diving Equipment & Supply Co Inc.Year:1946