The Lionel 8063 Seaboard SD-9 Diesel Locomotive is a limited edition model that was manufactured in 1980. It is a yellow-black plastic model with a Bo-Bo wheel configuration and an analog control system. This O gauge model is designed for the three-rail system and is suitable for ages 8 years to adult. It is a vintage model and is ready to go. This item has always remained in the box as a display collectable item. BRAND NEW MINT CONDITION.  PLEASE VIEW THE PICTURES.