I have seen very few of these for sale over the years. It is a fully licensed toy that was release in Korea. This particular toy had been customized to standard Optimus Prime colors by it's previous owner. I purchased it originally because I was going to use some of the trailer parts for a scratch build project I abandoned when MP trailer became commercially available. The paint job IMHO could be smoother...the chrome is Gold, and it looks like bare metal foil was used on the chest and thighs. One smokestack is broken but can easily be repaired. Asking $150 If you have any questions about this piece, please ask.