All Schwinn serial numbers before August 17, 1948 were lost in an office fire. Serial numbers were under the bottom hanger bracket until 1952 when they were moved to the left rear dropout. They were moved again in 1972 to the head tube. Several different numbering systems were used and sometimes the same numbers were reused in different years.
New numbering system: First letter is the month; first digit is the year.
Schwinn Serial Numbers After 2000
Finally, when ramping up for 1994 production, Schwinn had a shortage of the top-end R80’s and had Waterford Precision Cycles build them and ship them to Taiwan for painting and fabrication. But for the handful of Waterford-built ’94’s, the serial numbers won’t follow the standard pattern. Schwinn Years by Model. Catalogs by Year. Model Years; Aerostar: 1990: Aluminum 354: 1991 : Aluminum 434: 1990 , 1991 : Aluminum 564: 1989 : Aluminum 594. Schwinn serial number sequences, while appearing to be confusing on first sight, follow several general rules. If the first letter is a 'A' through 'M' it refers to production month ('A' = January, 'B' = February, etc.). The letters 'I' and 'O' are not used, to avoid mistaking them for numbers. This tool searches a database of Schwinn serial numbers and if it finds a match to your serial number then it will display the information available for your bike. Notes: This tool works for Schwinn bikes from 1948 to 1982. All serial number records before 1948 were lost in a factory fire. Schwinn Serial Numbers. 1976, 6J77123 =September, 1976.During the 1980s, Greenville used the old letter-digit(e.g. F8 = June 1988 )system which Chicago abandoned.
- D836694 = April 1958
- 1959 - A900000…
- 1960 - A000000…
- 1961 - A100000…
- 1962 - A200000…
- 1963 - A300000…
- 1964 - A400000…
New numbering system: First letter = month; second letter = year. I and O skipped to avoid confusion with one and zero.
- 1965 - AA00000…
- 1966 -AB00000…
- 1967 -AC00000…
- 1968 - AD00000…
- 1969 -AE00000…
- 1970 - AF00000…
- 1971 - AG00000…
Serial Number moved to Head Tube
- 1972 - AH00000…
- 1973 - AJ00000…
- 1974 - AK00000…
- 1975 - AL00000…
- 1976 - AM00000…
- 1977 - AN00000…
- 1978 - AP00000…
- 1979 - AQ00000…
- 1980 - AR00000…
- 1981 - AS00000…
- 1982 - AT00000…
Schwinn Serial Numbers After 1982
This information was taken from The Bicycle Trader August 1996, The West Coaster May/June 1991, and Collectable Schwinn-Built Bicycles by James L. Hurd.
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