To try to answer this, a bit more info might be helpful. Do you have anything else besides the sn, i.e. a model name? If you have a Schwinn mfgr'ed before Schwinn went under and became naught-but-a marketing tool for Pacific Cycle/Dorel, there may be numbers stamped (faintly visible) on the head-badge. If you can find this, it may help to figure out the provenance of your Schwinn. If there is a four digit number stamped on it, the first digit should be (as far as I know this is all Schwinn's with a four digit number stamped onto the badge) the last digit of the year in which it was manufactured. So a Genuine Schwinn (pre-bankruptcy) bike bearing a number like 7256, was made in 1987, 1977, 1967, etc. The other three digits are which day of the year it was made, so badge number 1025 would be made January 25th, of either 1991, 1981, 1971, etc.
Hope that helped.
No sn data published in English I know of.
1977
No published sn data
No published sn data
year 1942
1955
1954
No published sn data.
No sn data available.
You need to call Browning. The sn does not follow normal convention.
Browning.com has a sn function listed under customer service.
It was made in 1987