Diving helmet with multiple viewing ports and mounting hardware

The diving helmet is depicted as green, featuring a predominantly spherical form with a flattened crown. Two large, circular windows are positioned symmetrically on the front, providing lateral vision. A smaller, circular window is centrally located on the top, flanked by two smaller circular vents. Two metallic brackets, affixed to the sides of the helmet with screws and rivets, suggest a mounting mechanism. A cluster of components, possibly a valve or control panel, is located at the base of the helmet.