Good Vintage Japanese 4 Panel Screen Painting - Signed - Boats, Europeans, flags

Description

Good quality vintage four-panel screen painting. Depicts a European ship (Portugal?), distinctive Japanese impressionistic clouds, etc.
A well executed painting that is signed/sealed by the artist who is unidentified.
Painting dates from the mid-20th century (potentially a bit older). Opened fully, the screen measures 36" x 70.5".
Screen can be displayed flat like a painting or semi-folded as a floor screen.
Overall condition is excellent. No punctures, front or back. Lacquer frame in good shape with minor wear. Painting itself in very good condition with no damages. Just light wear (some tiny light flaking, minor rubbing, etc).
Please see images.