This is a poster print of one of Asano Tadanobu's artworks. The poster itself measures approximately 20.125" x 28.75" (51.5cm x 72.8cm). There is a large white field around the actual image - which is about 16.125" x 18.75" (41cm x 47.5cm).
The print has a great texture to it. You can see in the detail photo that it was created on a cardboard box or something similar. Small "© Tadanobu Asano" at lower left of print.