Commander William Riker pre-production paint proof (1992)
This one is from the Greg Jein collection, and it's Riker from his bodybuilder days. This one is hand-painted, as you can see, and it has a bit of a matte finish, in comparison to the shiny production figures.
It doesn't have a holster on the right leg. One of these proof figures, perhaps this one, is on the back of the 1992 figures in the pictures. On the back of the package it is also without a holster as pictured there, even though the production figures have them.
If you look at the figures on the back of the 1992 packaging (and later for that matter) it's clear that they're hand painted, and the paint finish is quite different from the production figures.