This page is dedicated to Fuji serial numbers. Special thanks to Tom Marshall of Bike forums and William Bevington and Scott Ryder of the book Japanese Steel for information contained in the article.
SERIAL NUMBERS 1971-1974*:
FUJI (Japan): P designates assumed production facility codes with known characters including F.G. I,J, K and M.
1971-1974: PyMxxxx, where years are based on the Imperial Japanese Calendar (i.e. 6 = Showa 46 = 1971, 7 = Showa 47 = 1972, 8 = Showa
48 = 1973, 9 = Showa 49 = 1974).
Example:
K9B10021
K=Factory area for US import
9=showa year code 1974
B=Month code for Feb
10021=Build number
1975-1979: yyMxxxxx
1980-1989: PMyxxxxx
1984-1986 Special Series: Myxx(x)
Information above provided by Tom Marshall
Serial number format WXYZZZZZ where;
W = a letter, all cases to date being F, K or M, with F presumibly indicating Fuji.
X = a number, indicating the last digit of the Japanese Imperial calendar year, Showa reign (6 = Showa 46 = 1971, 7 = Showa 47 = 1972, etc.)
Y = a letter, indicating the calendar month of manufacturer (A = January, B = February, C = March, etc.)
ZZZZZ = four or five digit number sequence, probably indicating frame number during month
Example: F7C10256 indicates the 10,256th frame manufactured during March 1972.
* The serial number format may extend beyond 1971-1974, in either direction, but to date, data samples lie within this range.
SERIAL NUMBERS 1976-1978*:
Serial number format YYXZZZZZ where:
YY = two numbers indicating the year of production
X = a letter, indicating the calendar month of manufacturer (A = January, B = February, C = March, etc)
ZZZZZ = a five digit number sequence, probably indicating frame number during month
Examples:
77B13425
indicates the 14.425th frame manufactured during February 1977.
75K50034
76=Year built (frames built late in the year were for the following year).
K=Month code for Nov.
5=Build level code for Professional
0034=Build number
* The serial number format may extend beyond 1976-1978, in either direction, but to date, data samples lie within this range.
SERIAL NUMBERS 1980-1987*:
Serial number format WXYZZZZZ where;
W = a letter, presumably indicating a Fuji facility or contractor. To date, samples have included F, I , J, K & S.
X = a letter, indicating the calendar month of manufacturer (A = January, B = February, C = March, etc)
Y = a number, indicating the last digit of the calendar year of manufacture (0 = 1980, 1 = 1981, 2 = 1982, etc.)
ZZZZZ = a five digit number sequence, probably indicating frame number during month
Example: FB125349 indicates the 25,349th frame manufactured during February 1981.
*The serial number format may extend beyond 1980-1987, in either direction, but to date, data samples lie within this range.
SPECIAL SERIAL NUMBERS 1984-1985*:
Serial number format XYZZZ where;
X = a letter, indicating the calendar month of manufacturer (A = January, B = February, C = March, etc)
Y = a number, indicating the last digit of the calendar year of manufacture (i.e. 5 = 1985)
ZZZ = a two or three number sequence, probably indicating frame number during month
Example: B514 indicates the 14th frame manufactured during February 1985.
This format is found on high end models offered under the Fuji design Series and Fuji Signature Series labels. Based on the unique format and serial number, they appear to be low volume, hand-built models.
*The serial number format may extend beyond 1984-1985, in either direction, but to date, data samples lie within this range.
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