Engine Bot limited edition wind up tin robot by Mr & Mrs Tin. Vroom vroom! Do you hear that? That's the sound of Engine Bot running smoothly! Mr & Mrs Tin products are all limited edition at 2000 pieces per model, worldwide. The limited edition is guaranteed by the certificate that is included in the box. Each product comes in a gift bag, with an envelope including the key and a special thank you note. The serial number certificate is included in the product box. Wind them up and watch them go!