By the Waters of the Nile

Challenging non-interlocking jigsaw puzzle, featuring a painting by the Swiss artist Otto Pilny (1866-1936), mounted on solid mahogany and featuring widespread line-cutting along colour boundaries.
Box style and the solid wooden nature of the puzzle lead me towards c1920's as the likely period of production, but who cut it is unknown.

Artist: Pilny, Otto
Date: c1920's
Brand: Unidentified
Material: Solid wood
Pieces: 494
Size: 11 1/2" x 23"
Theme: Maritime
Title: By the Waters of the Nile