So here is what I have so far now (with a little call-out to my wonderful local makerspace Kwartzlab).

Pretty happy with the overall look. I like the colors. I think it's a pretty close approximation to  the front three inches of a real Type 30 (at 2:3 scale). Not sure if I want to model the rest at this point. We'll see. I won't be able to improve on the fidelity without getting hands on measurements. If I do get some better measurements the model should be pretty easy to update with any refinements. 

I'm noticing that the black ND gel is pretty flimsy. As a result you can see some wrinkles forming. I'll have to do something about that as it destroys the illusion of a glass surface. We have a bunch of 1 mm clear acrylic at the lab that was left over from the Covid days when we were making face shields. Perhaps a layer of that will do the trick, or finding thicker gel filters.

In the back image you can see a few more construction details. For instance the blue front panel is attached via curved tabs pushed through the display holder frame, which are in turn locked in place by more tabs through slots (four grey bench shapes above). Everything else is bolted together with M4 bolts and nuts. When I was putting everything together I had a hard time because the bolt holes were a little tight, setup more for self threading than straight bolting. This was a problem because all the bolts had to be laboriously screwed in (all 12 of them, my wrist still hurts ;-). They were too close to the walls of the case and for the side parts at an angle.  Sooo I update the model with bigger holes. Should anyone want make one of these "you're welcome".

There is only one little place where I used a bit of glue. It's hard to see in the picture above but the inside rim of the circular screen opening has a metal highlight (Silver PLA filament). This was glued in place. Even the Logo above is held in place with two sided tape (but I'm thinking about adding some joiners).

That's about it. Time to fire up the display.