Don't think so.
Rare liveries are very hard to come by, if there is one out their, expect to pay 3 times MSRP at a minimum.
Di-cast model airliners are a small niche and the 1:400 scale is a niche of that niche, not every livery will be portrayed and any 'one of a kinds' will be in exclusive one off batches.
Off shot, contact all the 1:400 manufacturers that make 727's and inquire about it, make sure to include pics. If they say they've never had it in catalog, offer to pay a truly insane amount on a custom just for you (they'll likely say no, but couldn't hurt.)