Quoted from Jappie:I'm not sure what the possibilities were, back in 1988. Maybe some were shipped with mylar and some without. But I've also heard stories that mylar was shipped seperately with the game, so operators could make their own decision to install it or not.
Either way, examples both with and without mylar exist (and the XR7 clearcoated sample games, of course). I actually sold my first BR fairly quickly after buying it, because that was a non-mylared game with damaged insert decals. This was before the time that insert decals became available.
Back then a distributer told me they sprayed the pfs with Windex and floated the mylar into position and then squeegeed it down, per buyers preference. I think they just came with the machines. Some of my early well used games that could have benefited from them, came with uninstalled sling shot mylars inside the game.
I'm very new to pin side, and had to ask another group how to join. As they welcomed me and explained the strict joining requirements, I could be a charter member of this group. I've owned mine over twenty years. Pf is mylared, BG excellent, cabinet nice except for (see pictures ). Now back when I was building my collection it wasn't hard to find games in great condition. Of course I was disappointed but bought it thinking, it will do until I find a better one. I never had another opportunity, except at pinball shows, where they were always priced beyond my means. I have now given up my quest for perfection. I really appreciate what others are doing to theirs. I look forward to setting it up again and playing it as is. I'll leave it to the person who pries it out of my dying hands to do a full restoration.