Sorry to bump this and be quite off-topic as well! 😛 A while back the then T-1 put a few seconds of 70mm 4K up on their site. The owner of the fragment then mentioned there might be a few more bits, but nothing major.
Dre did a pretty solid colour recovery of one frame. I was just wondering if anyone’s considered restoring these bits for curiosity’s sake (and maybe as prep in the supremely unlikely event of a reel popping up)? I’ve asked a couple of collectors and they say that’s nigh on impossible, but they did confirm that all 70mm was printed on Eastman so would be brick red by now, like the 5 secs we’ve seen.

I’d happily have a go on pfClean/DaVinci, but I have to say, I’m probably not the best person for the job.
What I would love to do though, is see how these fragments could be edited into the grindhouse, how sharp they are when played in sequence with 35mm and whether the aspect ratio shift is alarming or not. (Maybe they could fit inside the widescreen Grindhouse frame with some blending on either side)

Cheers!