Now that the contest is almost over I'm going to start my buildup. I am starting with this Columbia girls bike which has a serial number of 296738. The number dates it at 1970 or 71 according to a chart I saw online but I thought it was older. I bought the bike at a swap meet for $20 a year or so ago. It was already primered and all I did to it so far was change the handlebars and neck, the seat and the tires. Well here she is the way I got it and after the changes.....