This is a 4 digit number, 3 digit julian date
>with 1 digit for the year. For example my Letour II (made in Japan) is
>stamped 3506, meaning it was manufactured on the 350th day of 1976 (you have
>to have a little insight to pick the model year) making mine a '77 most
>likely. I'm not sure when they started this practice, but have seen it used
>on their bikes from the mid 70s to present day.
Okee-dokee, try this... Schwinn Traveler number sf611386