I'm looking at this bike which is on Craigs List and won't be able to see it until after July 16. Bob Hufford and Stan Cooper believe it is a Schwinn Twinn from about '80-'81. What are your thoughts? Has anyone had any experience with these models, and do you believe, if it is in fair and working condition (as claimed by the seller), worth $75? Thanks for any help and guidance. (Sorry about the picture quality. They were taken by the seller.) Here's a a link to Tom Findley's catalogue page. Pictures below.