That large area of Trek props at worldcon was a combination of items owned by Greg Jein, Max Cervantes, and a lady whose name I don't recall off the top of my head.
That signed phaser and the other "TOS" props that were in Max Cervantes' cabinet look like HMS... they may have been made for Deep Space Nine's "Trials and Tribbleations" episode. Identical items are currently available as kits from Roddenberry.com
There were other replicas evident as well... the TOS Tricorder appears to be a Master Replicas! :lol
But most everything in Max's case was a replica (if it was from TOS or the TOS era movies), or alternatively if it was from DS9 or Voyager it was probably real.
BTW It looks like the phaser is signed by 3rd season TOS producer (and year 2 Space 1999 producer) Fred Freiberger... not propman Irving Feinberg! :wacko
In this shot the WOK comm appears to be a CaptJTK, the phasers are HMS, and the WOK medical gadget is, I seem to remember, real (made from a camera viewfinder I think). I don't know where the Trek III p1 came from, or if it's authentic. Looks cool with that diffraction holo tape tho!
These salt and pepper shakers are actual found objects
of the same kind that McCoy's laser scalpels were made from (I have a set of them myself), but the other items are replicas.
Greg Jein's items were in an adjacent cabinet. As far as the authenticity of Jein's items is concerned, I spoke to him only briefly but I did pose that exact question... specifically about the B&W phaser, which I was highly skeptical of.
I wish I could recall his exact response, but it was definitely along the lines of, what do YOU think... would I put out my priceless originals in this context? :redface
And to be sure, the prop display was NOT guarded or even attended, at every moment throughout the show. I passed by on several occasions when there was nobody behind the counters - tho the counters were supposed to be locked at all times, and nobody was supposed to remove items from them during the show.
I was however allowed behind the counters at one point to photograph the uniforms that were hanging on mannequins back there. But all the TOS outfits I saw were replicas, or else copies made for DS9 (with a few exceptions such as the Klingon TOS outfit which was real, and had an authentic TOS sash).
- k