Used set. Items in good condition. Some items have been replaced to different color / type. These are the following: 3 pcs of 4526771 parts have been replaced to black colored parts. 10 pcs of 4210689 parts have been replaced to black colored parts. Missing parts: 1 piece of 4528377 (it's requested only for the building of Model B). Used instructions. No box. Incomplete Stickers (the available stickers in used condition sticked on the set). The set is incomplete!