You must have been there first and the Navy build the ship around you.
Welcome to Rebreather World and thanks for joining us.
Your list there reads like a table of contents in rebreather history.

I've only seen a few of those rigs, the LARU at the HDS, the MK6 a friend has,
and some of Nick Icorn's collection.
And some people MK15s are old.
Good to have you onboard.
Add-ited: Read the NEDU/Divex article a while ago when the page first went up.
Thanks for supporting Janwillem's site and sharing all that.