In good used condition, parts have been used and played with. Some of the larger pieces look like they have had some color added to them in order to help them stand out better, as they are sometimes difficult to tell from the slightly smaller pieces. By that I mean that some of the planes wings on the underside have been marked, as well as things like the barrels of some tanks, helmets of some soldiers etc.. This has been done only on the slightly larger pieces that count as 5 units, none of the smaller single units have been marked.