A 6-bolt admiralty pattern diving helmet by C E Heinke & Co Ltd, London. The numbers to this helmet and corselet are not that far apart so are of a similar age. Circular side windows with screw in guards, circular front window with spitcock to the lower right and pepper pot outlet behind left hand side window, rear air inlet and comms, lanyard hooks to either side, weight posts to corselet. Inside the centre branch of the air duct is missing. Delivery is free within the UK mainland.
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