MASTERPIECES-Jigsaw Puzzle: John Deere Collection. The John Deere model B tractor featured in this puzzle is one the most popular tractors in John Deere's history. The first models were introduced in 1935 and advertised at the one-row General Purpose row-crop tractor. The puzzle itself has 1000 pieces and the chipboard used is made of recycled materials. Design: America's Heartland. Finished dimensions: 26-3/4x19-1/4 inches. Recommended for ages 13 and up. Imported.