While I’m not really confident on saturation levels, I think the View-Master is a handy source to get just the right contrast out of the BD footage. I did this a while ago, but looking back it strikingly fits right in with the 35mm frame from the eBay listing:

View-Master:

BD:

Correction + slight grain :

Given my input and output were both fairly low resolution, I’d be interested to see what kind of results I could get out of the actual BD instead of just an online reference image