537 Basic Building Set / Open box in fair condition & Sealed plastic bags. ONLY ONE TREE #3470. More 1x1 & 1x2 than bricklink inventory. Items For Sale: Sets: Universal Building Set: Basic: 537-1 Loc: USA, Min Buy: ~US $2.00
537 Basic Building Set Excellent condition. One Toys R Us sticker applied. Collectors piece!
1 seal is cut from age. Items For Sale: Sets: Universal Building Set: Basic: 537-1 Loc: USA, Min Buy: ~US $5.00