LOVELY REPRODUCTION PRODUCT FOR SEA DIVING LOVERS. A BEAUTIFUL GIFT FOR LOVER AND FRIENDS. 18" Tall x 15" Wide x 17-1/2 Deep. Collectible Antique Maritime Marine Gift. This is an excellent quality helmet.Please feel free to ask any question. Thanks for your time and interest! The item "Vintage Diving Helmet Deep Sea Scuba Diving Helmet Big Size 18'' US Navy Mark V" is in sale since Saturday, March 23, 2019. This item is in the category "Antiques\Maritime\Diving Helmets". The seller is "globalnautical" and is located in ROORKEE, UTTARAKHAND. This item can be shipped worldwide.