EXCLUSIVE! James Whistlers "Arrangement in Grey and Black No 1" (1871) is far better known by its colloquial name "Whistler's Mother". Here, it becomes a charming and tongue-in-cheek gift for Mom. As she builds the puzzle she'll find letter-shaped pieces (called whimsy pieces in the puzzle world). Together they spell Happy Mother's Day with a heart-shaped piece at the center. Each is 300 pieces, high quality 1.5mm millboard, and is hand finished by expert craftsmen. Assembled size - 12 ¼ x 18 ½ inches.