Distinguishing features
It's a very old, rusty, yellow Schwinn Le Tour bike. The serial number (Y491412) is on the back frame near the cogset. It's missing both tire air caps and has red tape covering each air cap. The saddle is a Wittkop Bicycle Saddle (for City Bikes) Medicus Air. It has stickers that say "Schwinn Approved; Made in Japan For Schwinn Bicycle Company Chicago; Baker's Bicycle Center, 2693 W Liberty Ave, PIttsburgh, PA, 15216, 343-4230"