Schwinn Serial Numbers 1980%27s


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I located the serial number: SC507898, but the two letters at the beginning don't match any date code listed on any of the sites the last serial numbers and how to decode them. The head badge also has a number on it: 1025 which would put it as made the 102nd day of either 1975 or 1985.

AGE / VALUE: 1986 Schwinn Madison Serial Number. AGE / VALUE: 1987 Bridgestone Grand Velo 3000. MISC: 1980 Schwinn Continental stem size. MISC: 1980s Peugeot. Page 2: Safety Warning Labels And Serial Number Safety Warning Labels and Serial Numbers. 250lbs. 250lbs. Reading the Serial Number The instructions below show how to decode the information contained on the serial number. Page 3: Maintenance. Se017477 i believe the serial number brakes it down to be a 1980 it is a schwinn chicago bike it appears to be all original with the exception of the seat center pull breaks tires are ok but do show wear and would be up to you to decide on replacement it is a 1020 lite weight frame 10 speed original bar wrap oem schwinn head light and charger.

Serial #'s are now on the lower left of the headtube, by the Schinn badge on fromt of the frame
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Numbering system:

The first letter is the month, the second letter is the year.
I and O are skipped so as to avoid confustion with 1 and 0. 1982

Examples:
AF***** = Jan. 1970,..... ('A' = Jan., 'F' = 1970)
GL***** = July. 1975,..... ('G' = July., 'L' = 1975)
MR***** = Dec. 1980,..... ('M' = Dec., 'R' = 1980), etc.
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JANUARY, ---------------------------- AF*****
FEBRUARY, -------------------------- BF*****
MARCH, ------------------------------- CF*****
APRIL, --------------------------------- DF*****
MAY, ----------------------------------- EF*****
JUNE, ---------------------------------- FF*****
JULY, ---------------------------------- GF*****
AUGUST, ----------------------------- HF*****
SEPTEMBER, ------------------------- JF*****
OCTOBER, --------------------------- KF*****
NOVEMBER, ------------------------- LF*****
DECEMBER, ------------------------- MF***** JANUARY, ---------------------------- AG*****
FEBRUARY, -------------------------- BG*****
MARCH, ------------------------------- CG*****
APRIL, --------------------------------- DG*****
MAY, ----------------------------------- EG*****
SerialJUNE, ---------------------------------- FG*****
JULY, ---------------------------------- GG*****
AUGUST, ----------------------------- HG*****
SEPTEMBER, ------------------------- JG*****
OCTOBER, --------------------------- KG*****
NOVEMBER, ------------------------- LG*****
DECEMBER, ------------------------- MG***** JANUARY, ---------------------------- AH*****
FEBRUARY, -------------------------- BH*****
MARCH, ------------------------------- CH*****
APRIL, --------------------------------- DH*****
MAY, ----------------------------------- EH*****
JUNE, ---------------------------------- FH*****
JULY, ---------------------------------- GH*****
AUGUST, ----------------------------- HH*****
SEPTEMBER, ------------------------- JH*****
OCTOBER, --------------------------- KH*****
NOVEMBER, ------------------------- LH*****
DECEMBER, ------------------------- MH***** JANUARY, ---------------------------- AJ*****
FEBRUARY, -------------------------- BJ*****
MARCH, ------------------------------- CJ*****
APRIL, --------------------------------- DJ*****
MAY, ----------------------------------- EJ*****
JUNE, ---------------------------------- FJ*****
JULY, ---------------------------------- GJ*****
AUGUST, ----------------------------- HJ*****
SEPTEMBER, ------------------------- JJ*****
OCTOBER, --------------------------- KJ*****
NOVEMBER, ------------------------- LJ*****
DECEMBER, ------------------------- MJ***** JANUARY, ---------------------------- AK*****
FEBRUARY, -------------------------- BK*****
MARCH, ------------------------------- CK*****
APRIL, --------------------------------- DK*****
MAY, ----------------------------------- EK*****
JUNE, ---------------------------------- FK*****
JULY, ---------------------------------- GK*****
AUGUST, ----------------------------- HK*****
SEPTEMBER, ------------------------- JK*****
OCTOBER, --------------------------- KK*****
NOVEMBER, ------------------------- LK*****
DECEMBER, ------------------------- MK***** JANUARY, ---------------------------- AL*****
FEBRUARY, -------------------------- BL*****
MARCH, ------------------------------- CL*****
APRIL, --------------------------------- DL*****
MAY, ----------------------------------- EL*****
JUNE, ---------------------------------- FL*****
JULY, ---------------------------------- GL*****
AUGUST, ----------------------------- HL*****
SEPTEMBER, ------------------------- JL*****
OCTOBER, --------------------------- KL*****
NOVEMBER, ------------------------- LL*****
DECEMBER, ------------------------- ML***** JANUARY, ---------------------------- AM*****
FEBRUARY, -------------------------- BM*****
MARCH, ------------------------------- CM*****
APRIL, --------------------------------- DM*****
MAY, ----------------------------------- EM*****
JUNE, ---------------------------------- FM*****
JULY, ---------------------------------- GM*****
AUGUST, ----------------------------- HM*****
SEPTEMBER, ------------------------- JM*****
OCTOBER, --------------------------- KM*****
NOVEMBER, ------------------------- LM*****
DECEMBER, ------------------------- MM***** JANUARY, ---------------------------- AN*****
FEBRUARY, -------------------------- BN*****
MARCH, ------------------------------- CN*****
APRIL, --------------------------------- DN*****
MAY, ----------------------------------- EN*****
JUNE, ---------------------------------- FN*****
JULY, ---------------------------------- GN*****
AUGUST, ----------------------------- HN*****
SEPTEMBER, ------------------------- JN*****
OCTOBER, --------------------------- KN*****
NOVEMBER, ------------------------- LN*****
DECEMBER, ------------------------- MN***** JANUARY, ---------------------------- AP*****
FEBRUARY, -------------------------- BP*****
MARCH, ------------------------------- CP*****
APRIL, --------------------------------- DP*****
MAY, ----------------------------------- EP*****
JUNE, ---------------------------------- FP*****
JULY, ---------------------------------- GP*****
AUGUST, ----------------------------- HP*****
SEPTEMBER, ------------------------- JP*****
OCTOBER, --------------------------- KP*****
NOVEMBER, ------------------------- LP*****
DECEMBER, ------------------------- MP***** JANUARY, ---------------------------- AQ*****
FEBRUARY, -------------------------- BQ*****
MARCH, ------------------------------- CQ*****
APRIL, --------------------------------- DQ*****
MAY, ----------------------------------- EQ***** Numbers
JUNE, ---------------------------------- FQ*****
JULY, ---------------------------------- GQ*****
ScramblerAUGUST, ----------------------------- HQ*****
SEPTEMBER, ------------------------- JQ*****
OCTOBER, --------------------------- KQ*****
NOVEMBER, ------------------------- LQ*****
DECEMBER, ------------------------- MQ***** JANUARY, ---------------------------- AR*****
FEBRUARY, -------------------------- BR*****
MARCH, ------------------------------- CR*****
APRIL, --------------------------------- DR*****
MAY, ----------------------------------- ER*****
JUNE, ---------------------------------- FR*****
JULY, ---------------------------------- GR*****
AUGUST, ----------------------------- HR*****
SEPTEMBER, ------------------------- JR*****
OCTOBER, --------------------------- KR*****
NOVEMBER, ------------------------- LR*****
DECEMBER, ------------------------- MR***** JANUARY, ---------------------------- AS*****
FEBRUARY, -------------------------- BS*****
MARCH, ------------------------------- CS*****
APRIL, --------------------------------- DS*****
MAY, ----------------------------------- ES*****
JUNE, ---------------------------------- FS*****
JULY, ---------------------------------- GS*****
AUGUST, ----------------------------- HS*****
SEPTEMBER, ------------------------- JS*****
OCTOBER, --------------------------- KS*****
NOVEMBER, ------------------------- LS*****
DECEMBER, ------------------------- MS***** JANUARY, ---------------------------- AT*****
FEBRUARY, -------------------------- BT*****
MARCH, ------------------------------- CT*****
APRIL, --------------------------------- DT*****
MAY, ----------------------------------- ET*****
JUNE, ---------------------------------- FT*****
JULY, ---------------------------------- GT*****
AUGUST, ----------------------------- HT*****
SEPTEMBER, ------------------------- JT*****
OCTOBER, --------------------------- KT*****
NOVEMBER, ------------------------- LT*****

Schwinn Serial Numbers Digit


DECEMBER, ------------------------- MT*****

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During the 1980s, Greenville used the old letter-digit
(e.g. F8 = June 1988) system which Chicago stopped using in 1965,

Schwinn Serial Numbers After 1982


changing to the two-letter system.

1990's Schwinn Serial Numbers

For newer bikes:
there's a 4 digit serial number lightly stamped onto the headbadge.
The first three digits are the numerical day of the year,
and the last digit is the last digit of the year.

Example:
3654 is 12/31/84 or 94 or (?).