While not a poster, it's a promotional book, with amazing art, and does show a few posters...
I found and picked up this soft cover book the other day, that was put out in 1998, as a precursor/behind the scenes/creation of the sequel to the 1981 animated film,
HEAVY METAL. The book was published in 1998.
This flick was titled
HEAVY METAL 2000 aka
F.A.K.K.2, and was distributed by Columbia Tri Star, in 2000.
This book features the incredible concept art by Simon Bisley, along with amazing
photo of Penthouse model and actress, Julie Strain, in costume, who the character of F.A.K.K. was designed and based from. Her voice is also that of the character in the movie.
Plus, when i looked at it closer, at home, I saw that Julie Strain had signed the inside front cover.