683 series Thunderbird model train set. - Model Name: 683 series Thunderbird (Renewal Car) - Model Number: 10-1391 - Scale: N gauge Thank you for viewing. The box is a little dirty, but the vehicles themselves are not dirty. The rubber on the coupler of the third car (one side only) is missing and loose, and the pantograph on the fifth car is broken (the parts are still available). We recommend replacing these two parts. Also, the motor starts a little sluggishly. Once it starts, it accelerates smoothly. Replacing the motor may also be necessary.