Two seater Schwinn bicycle built for two

This bicycle has been in my wife's uncle's garage for 20+ years. It is a 1950's ???? I am not sure of the age!!!!Schwinn two seater bicycle built for two. It has surface rust just from sitting. Its has some white paint over spray from painters repainting the garage it was in. It is complete and I took serveral pictures to show the condition. Everything works I rode it around to make sure. LOCAL PICKUP OR WILL SHIP UPS GROUND.