John, yes, the screen is in like new condition. Of course, I should've kept it as a spare when Kenmore Camera in Kenmore, WA handed it to me for free. Instead, I traded it at a repair shop for a K2 screen for the FM2n I owned at the time.
With respect to the G and H screens, you almost have to buy them as a set, if you have lenses that require different versions.
The F/F2/F3 screens do work, but, it's best to find a red dot F3 screen if you're going to build your own P screen. The F, F2, and non-red dot F3 screens need -1/3 stop exposure compensation dialed in on the DP-20.
-J