Done from a quick Screen Capture...
The RAW file would have undoubtedly been easier to work with. So contact Dave for that when you do your own Tweak.
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My "Tweak" was influenced by my going through some of my very old film prints earlier this evening...
This tweak was done via working with Curves & Levels. Then, I used a B&W conversion layer and faded that until I got the color I wanted.
Finally, I finally added a frame to stay with my concept.