Kuwahara Serial Number Identification Guide

Factory Kuwaharas were made in Japan by a few different companies like Tange and Koizumi.

Here is a breakdown of the serial numbers found on Kuwahara frame sets and forks between 1979 and 1985.

Tange Made Frame Serial Numbers

Found on KZ, Laserlite, Surivivor, Nova, KYZ, E.T., KM-1 and 24 models

1979 - 1983

Stamped: T1A0001 (underside of bottom bracket)
T = Tange / 1 = 1981 / A = Month / 0001 = Unit # produced of the month

Ex. T3J1340 = The 1,340th frame made by Tange in October of 1983
Ex. T9K1576 =  The 1,576th frame made by Tange in November of 1979

Tange Made Fork Serial Numbers

Found on KE-1, KZ, Laserlite, Surivivor, Nova, KYZ, E.T., KM-1 and 24 models

1979 - 1985

Stamped: Tange OA (on steerer tube)
Tange / 0 = 1980 / A = Month

Ex. Tange 3C = Tange made fork in March of 1983
Ex. Tange 9I = Tange made fork in September of 1979

Kuwahara Made Frame Serial Numbers

Found on KZ, Laserlite, Surivivor, and Nova models

1980 - 1985

Stamped: K1A0001 (underside of bottom bracket)
K = Kuwahara / 1 = 1981 / A = Month / 0001 = Unit # produced of the month

Ex. K4C0560 = The 560th frame made by Kuwahara in March of 1984

Koizumi Made Frame Serial Numbers **UPDATED**

Found on KE-1, KZ, Laserlite, Surivivor, and KM-1 models

1979 - 1984

Stamped: KGA 1 0001 or 79 1 00001 (underside of bottom bracket)
KG = Koizumi / Third Letter = Year / First Number = Month / 0001 = Unit # produced of the month

Ex. KGC 8 1130 = The 1,130th frame made by Koizumi in August of 1983
Ex. KGB 12 1100 = The 1,100th frame made by Koizumi in December of 1982
Ex. KGA 7 0830 = The 830th frame made by Koizumi in July of 1981
Ex. 79 12 00358 = The 358th frame made by Koizumi in December of 1979

Apollo Made Frame Serial Numbers

Found on Apollo, Apollo E.T. and Apollo 16 models

1980 - 1987

Stamped: 80-01-00001 (on left side of seat post tube)
80 = 1980 / 01 = Month / 00001 = Unit # produced of the month

Ex. 81-09-64191 = The 191st (or possiblly 64,191st) frame made by Apollo in September of 1981
Ex. 83-10-71465 =  The 465th (or possiblly 71,465th) frame made by Apollo in October of 1983

Stamped: N72856 or N7395C
breakdown explanation n/a

Giant Made Frame Serial Numbers

Found on Pantera models

1983 - 1985

Stamped: G0184 (on right rear dropout) & 4684981 (on left rear dropout)
G = Giant / 01 = Month / 84 = Year
4684981 = Unit # produced of the month

Ex. G0783 = Made by Giant in July of 1983
Ex. G1284 = Made by Giant in December of 1984