Movieposters.com has that version listed for sale. I suspect it is probably a Canadian one-sheet rather than US, given they are based in Toronto.
https://www.movieposters.com/products/iron-claw-mpw-138740There is also one listed on EBay by seller Geekystuff. Not bought from them myself so no idea if their gear is legit but they regularly sell new release posters. Others on here may be better informed than me on this point.
