Kre-O Transformers Optimus Prime building set. From Hasbro. Missing 13 pieces but in good shape otherwise. All the critical Optimus Prime-y parts seem to be here (one of the axels is missing, I think Lego makes an equivalent but I can't be sure), you could probably finish off the kit with regular, common red Lego pieces (Kre-O bricks are compatible with Lego.) Also great for kitbashing and making your own custom Optimus Prime.

Contains 77 of the 90 original pieces, in box with instructions. Pieces look fine, but there are 13 missing.