These are interesting documents but it is unknown to me who the manufacturers are of the equipment shown. Several photographs show divers wearing 8 bolt helmets, one of them a japanese 6 bolt helmet, another one a Siebe Gorman 6 bolt helmet. Can you identify any of the helmets shown: please let me know.
Japan, Miscellany
‘DiveScrap’Index
the scrapbook of diving history
Do you have images you want to share then please send them to: david@divinghelmet.nl Thank you.