I was fully expecting to see pix of a Campania with a headset marked "H. McIver Van Nuys California"...but this is something else!
Just to supply some visuals, these are a "Professional" and a "the Ace" models both sourced from Japan and at least the "the Ace" clearly a Fuji product but maybe both were.
They sure don't bear much similarity to this Cromor-tubeded "Van Nuys"