LEGO Classic Space 6991 Monorail Transport Base. Retired and rare - released in 1994. The set is in very good condition. Motor and light work perfectly. Attention: The minifigures and a few small pieces are missing!The item "LEGO Space Unitron 6991 Monorail Transport Base with instructions, RARE" is in sale since Thursday, December 10, 2020. This item is in the category "Toys & Hobbies\Building Toys\LEGO Building Toys\LEGO Complete Sets & Packs". The seller is "aha-aramis" and is located in Hallein. This item can be shipped worldwide.