The engine is in mint condition and ran smoothly on my short test track. HOWEVER: A part may have come off while I put the locomotive back in the box after I had given it that test run. The main photo shows what looks like a tank under the rear couplers. I believe the loose piece, clearly shown in photo 12, is that tank piece that came off due to my clumsiness. My eyesight is not good enough to glue it back on safely.