I'm assuming that frame came from one of those limited-edition 70mm film cells that were sold under license from Lucasfilm. It's anybody's guess just which 70mm print it was from. They claim to be from a "master print taken from the original internegative," and judging from the lack of any substantial dirt or damage, I'm wondering if these were backup prints in the LFL archives that weren't actually screened.

Looking at images of the cells currently available on eBay, it's interesting to note that none of the ANH cells have the black mag stripes on the ends; the 2.5mm to the left and right of the perforations are clear. Not sure if it's because the striping had flaked off, or if the print was never striped in the first place (would they have gone through the trouble of making a new 70mm print in the 90s - unstriped since it wasn't meant to be screened - just to make these cells?)

ESB, however, does have the stripes; one of the cells currently on eBay even has a visible "EASTMAN" stamp. Judging by the quality of the colors on the ESB cells, even today, could they possibly be from an LPP print made for the '85 reissue? (Were there ever any LPP 70mm prints made of any of the trilogy?)

If they were from a print that late, it wouldn't be a surprise that it was the revised edit...