All the measurements are approximate. Weight : 6.5 kg Approx. Model: US Navy Mark V.Note: We will provide only one helmet. The item "Anchor Antique Heavy Diving helmet Mark V Vintage Morse Divers Scuba Helmet 18" is in sale since Friday, June 25, 2021. This item is in the category "Antiques\Maritime\Diving Helmets". The seller is "creativeera" and is located in Jamaica, New York. This item can be shipped worldwide.