This is a good quality reproduction in original size made from copper and brass.
The weight of this piece is abt. 10 kgs (abt. 22 lbs.) a little less than that of an original piece. There is glass fitted to all the viewing ports.
The front port can be opened.
The inscription on the brass plate is as follows:
NAVY DIVING HELMET MARK V MOD-1
SERIAL NO. 5123 DATE OF MFG 1/45
DIVING EQUIPMENT
The helmet can well be worn if some rough edges on the inside are smoothed.
A padded cap would be advisable too.
Dimensions : Height = 45 cms/18 inches, width = 33 cms/13 inches across shoulder and 41 cms/16 inches back to front.