I received a prototype SUB 300 Professional 50th Anniversary edition to review for a magazine while diving in a couple of weeks and thought I'd post a few photos I've taken since getting the watch. I hope they're useful for those who've been curious about the new pieces.
With my old T.Graph:
On my 7.5"/19cm wrist:
On (my own) rubber NATO:
With a vintage BOR bracelet mounted (end links need tweaking):