I looked at my catalog and I am somewhat unsure of your new bike that you picked up. The numbers don't quite match for any certain year. But the Serial Numbers are only 1 number off for Flightliners for 1962 models. Maybe it was made between 62-63. The numbers for that year were between 4660 and 4663. The older Higgins of yours I have not found any numbers matching yet, I will keep looking. Any way both are nice bikes, enjoy them. Leo