Your cleanup of the fold lines, etc., is excellent. I tried doing that a few years ago and couldn’t get results that good. Some great choices of art, too. 👍
There was one sold on Heritage 10 years ago for $7500.
https://movieposters.ha.com/itm/film-noir/the-big-heat-columbia-1953-italian-4-foglio-55-x-78-/a/7083-83343.s?ic4=OtherResults-SampleItem-071515&tab=ArchiveSearchResults-012417
Dry mounting is usually frowned upon by collectors because it isn’t generally reversible and the glues can deteriorate the poster paper. More info here: http://www.learnaboutmovieposters.com/NewSite/INDEX/ARTICLES/drymounting.asp