The MoMA Mondrian Greeting Card Puzzle from Galison is a 60-piece postcard puzzle featuring Piet Mondrian's iconic work from the Museum of Modern Art collection. Package comes with the puzzle fully assembled. Write the message on the back, break up the pieces, place in the envelope and mail. • A greeting card and puzzle in one! • Size: 5.5 x 7.375 x 0.375", 140 x 187 x 10 mm • 60 Piece Puzzle • Sticker Seal • Colored Envelope