A Unique Surprise Nautical Gift. Top head measurements: 16" x 12.5" x 17 / 40cm x 32cm x 42cm.It is in good condition for its age Old Antique Look. Made of High-Quality Metal with heavy Rings. S Navy Mark V 18 Diving Helmet Deep Sca Yellow Diving Helmet Replica" 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.