TOA TSK Deep Sea Diving Helmet
The Toa company was founded in 1909 in Minamisenji Japan. The company made diving equipment and in 1924 a limited company was created by Kintaro Sano.
By this time all types of diving equipment was being made and in 1944 the Company name was changed to Toa Diving equipment Co Ltd. After a few months the Imperial Navy took over the running of the factory and with its limited workforce of 50 men and women it gradually worked its way up to being the number one diving and equipment manufacturer in Japan.
This helmet was used in California by a well known diving contractor from the early 1950's through 1980's.