Originally Posted by ahorner1946
I guess till Batavus or someone comes up with a database of serial numbers for our Batavus bikes we are left to dig for clues whereever we can!
Al
Somewhere on this site it says that the first number of the serial number (of the sport bikes, presumably also of the race bikes) indicates the year of build. So '4' means 1974.
http://rijwiel.net/batavu2n.htm