How to Determine the Year of a Rieju Bike's Production Using its Frame Number
Find your Frame number,also known as the chassis number, of your bike. You can find this either in the log book belonging to the bike or on the right hand side of the headstock.
Step 2:Make note of the twelfth character in the frame number, which is Y in the example below:
Locate the character in the table below and the corresponding year is the year of production for that bike. A little bit of common sense is required when doing this however as the system repeats every 30 years. For example if your character is C but you only brought your bike a few years ago it was produced in 2012 not 1982.