Can someone with a big screen HD television and a remastered print do us all a big favor and look at this scene, frame by frame, and tell us what those aggravating 16xx or 18xx registries actually are?
Thanks for reminding me, that I wanted to take care of that.
I do have a FullHD DLP front projector with 1:1 pixel mapping (!) and an Oppo BD player (considered one of the best out there). I put the scene into an A-B loop and also did freeze frame analysis.
It's obviously clear that it is, indeed, "1831" and "1685" and "1672"
A frame by frame analysis is necessary because the grain in the original film stock will shift from one frame to the next, but I would think that a person with a good eye (and a lot of patience) would be able to see whether the majority of the frames show a 6 or an 8 for each of the contentious registries.
This is the problem I encountered, there is no majority. Regarding "1X64" and "1X97" there is an equal amount of frames that do suggest a "6" or an "8".
Since I presented a theory further up in post # 123 regarding the last two digits, it's essential to decipher "1X64" to determine whether my theory holds water or "there she blows".
One of my friends has the big Sony 4K UltraHD front projector and the latest Oppo BD player. Next time I see him I will bring my TOS BD along and see if it's clearer to see there.