The Vintage 70's Gilbert Motorized Mark 20 Erector Set is a classic construction toy that harkens back to the 1970s. Made by the renowned brand Gilbert in the United States, this vintage toy is a nostalgic piece that brings back memories of simpler times. While this set is may be missing some parts, it still retains its charm and functionality, making it a perfect addition to any vintage toy collection. Whether for play or display, the Gilbert Motorized Mark 20 Erector Set is sure to delight both collectors and enthusiasts alike. A vintage (c1971) Gilbert erector set! Box is marked as "Mark 20" and number "31102". Comes in the original cardboard box with instruction sheets. There are a decent amount of parts included, but I don't know if it it's complete. You receive everything shown.