So to muddy the waters even more, here is an Angrywookie dome that T-VIRUS had painted way back when we just began researching paint finishes.
To the right is the AW, and this is basically a single-stage paint application using an automotive spray gun with a No. 4 or 5 nozzle. The paint was Centauri enamel paint. There's no gloss coat here, nor is there any polish on it. That is strictly the gloss of the paint itself. If you wetsanded and hand polished it, it has the potential of looking like the ESB shot which looks glossier and more even. You'd be reducing the orange peel texture to get a more even and flatter surface.
The orange peeling texture on the ESB seems a bit finer, and on the domecap itself the texture seems much, much finer than the AW. This could either indicate the way it's sprayed or could also indicate that some handwork was done to the paint before a theoretical clear coat.
Unfortunately, based on the above and previous shots, it's hard to conclude ither way. The glossy look can be achieved through hand polishing (as done in GINO's former helmet) and it can be done though a half-assed polish to the black paint but with a gloss coat added.
However, we
can deduce from the orange peeling in the ESB that the paint was applied by a
propellant (i.e. spray, be it a spray gun or a spray can) versus being hand painted.
ROTJ screenshots may be lot clearer in this regard.