Sinar part 07.2500

OK, I just saw this on the Sinar forum on facebook. Has anyone ever seen or perhaps even worn a pair of Sinar overalls in the wild, and in what capacity? Were there any studios in the 70s with assistants running around in Sinar overalls, or maybe the darkroom workers put them on to keep their clothes clean, or were they just for the Sinar factory and Sinar technicians?

Employees of Sinar used to wear them at trade shows and demos. Only saw them in white.

I figured you might have seen them, Bob.