[Sheldon wrote this article largely from memory, based on his long experience in the bicycle retail sector.
(Go online to for a list of serial numbers between 19.) Those bikes produced between 19 typically start with a letter representing the month it was produced (A=January, B=February, and so on) followed by a digit representing the year (9=1959, 0=1960, 1=1961, 2=1962, 3=1963, 4=1964). Read the serial numbers of bikes produced between 19. The first letter still represents the month the bike was produced, and the second letter now represents the year.But you can also look for the serial number to identify an authentic Schwinn bike. Schwinns are best known for the arched bar in the middle of the frame, also called the balloon frame. Some Schwinns follow other popular design models such as 10-speed or mountain bikes. That is why Schwinns are also called beach cruisers. The seats on Schwinn beach cruisers can be approximately 10 to 12 inches wide. Look for the serial number on the lower head tube (right above the wheel on the front of the bike) for Schwinns produced between 19.The serial number will also indicate when it was made, which can help you estimate the value of the particular Schwinn bike. Those produced after these dates will usually have a serial number stamped on the bottom bracket shell (the rear axle hanger holding the wheel in place). Identify Schwinns produced before 1948 by looking for either of these serial numbers: B12818 or Z12993. Interpret the serial numbers of bikes produced between 19.The result is a bike that makes any ride feel better. Unless you race time trials, this is the only one you'll need.,000; 16.3 lbs, 56cm; Trek Pilot 5.0 PERFECT FOR: Committed roadies whose idea of "just staying in shape" involves four-hour-plus rides on hilly roads.