LIONEL 1615 0-4-0 DIE CAST PRR STEAM SWITCHER , RUNS FINE front lights intact

1615 Lionel Switcher Runs Fast well in forward and reverse. I do not have a magnetic track to test front coupler but when I pull button down it opens but does not "pop" open. Likewise, it remains closed when pushed shut. Missing some of drive gear as seen. Condition as seen in pictures--pictures tell the story. Please ask all questions or ask for specific pictures before end of auction. Thank you for taking your time to look.