Plastic blocks, New Blocks. Some parts may be missing (see photo 3). In my personal opinion, most of them have no noticeable issues. I've uploaded photos of anything I noticed (photos 5 and 10). Gaps (photos 6 and 11), particularly heavy soiling (photo 7), dents and holes (photo 8). I wiped each one down with water before listing, but there may be dust and dirt in the gaps that I couldn't remove. I stored them in a case in my room after I stopped using them, so there are many places where dust from the case couldn't be removed. There are also traces of sticker removal. Please refrain from purchasing if you are looking for perfection. If you have any concerns, I can add more photos, so feel free to comment!