Get ready to build your own mini city with this vintage 1950's Block City set from Tri State Plastic Molding Co. This construction-themed set includes interlocking blocks, all made from high-quality plastic and manufactured in the United States. Whether you're a collector or just looking for a fun building activity, this retired set is perfect for you. The set features the iconic B-300 product line, and is sure to bring back memories of childhood building adventures. Don't miss out on the chance to add this piece of history to your collection or share the joy of building with the next generation.