400 PIECE PUZZLE. Jigsaw Puzzle (400 Pieces) Artwork depicting Prisonniers de Guerre par Jean-Pierre Laurens. Jean-Pierre Laurens. 400 piece puzzles are made-to-order and hand-finished on 100 recycled 1.5 mm millboard. The completed puzzle measures 31 x 41 cm and is delivered packaged in an attractive presentation box (23.1 X 17.5 X 3.3 cm) specially designed to fit most letterboxes.