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Triumph Motorcycle Engine & Frame Serial Numbers

Triumph
Model Designation
PREFIXMODEL
T140V750cc
Bonneville
T140C750CC
Trophy
T140E750cc
Bonneville
TR7V750cc
Tiger
TR7RV750cc
Tiger (5 speed)
T120R650cc
Bonneville
T120RV650cc
Bonneville (5 speed)
TR6C650cc
Trophy
TR6CV650cc
Trophy (5 speed)
TR6R650cc
Tiger
TR6RV650cc
Tiger (5 speed)
T100R500cc
Dual Carburetter/Daytona
T100C500cc
single carburetor/Tiger or Trophy
T100C500cc
single carburetor/Tiger 100 or Trophy
T100S500cc
Tiger 100
T90350cc
Tiger90
6T650cc
Thunderbird
T150750cc
Trident
T150V750cc
Trident (five speed)
T160V750cc
Trident (five speed/electric start)

Triumph
Twin Serial Numbers 1950 - 1969
YEAR
Unit 350 & 500cc
Pre
Unit 500 & 650cc
1950
------

from 100 N
1951
------

101NA - 15808NA
1952
------

15809NA - 2500NA then 25000 - 32302
1953
------

32303 - 44134
1954
------

44135 - 56699
1955
------

56700 - 82799
1956
------
70930
- 011115 then 0100 - 0944
1957
H101 - H760
0945
- 011116
1958
H761 - H5484
011116
- 020075
1959
H5484 - H11511

020076-029363
1960
H11512 - H18611
029364
- 030424 then D101 - D7726
1961
H18612 - H25251
D7727
- D15788
1962
H25252 - H29732
D15789
on Unit 650CC
1963
H29733 - H32464
DU101
- DU5824
1964
H32465 - H35986
DU5825
- DU13374
1965
H35987 - H40527
DU13375
- DU24874
1966
H40528 - H49832
DU24875
- DU44393
1967
H49833 - H57082
DU44394
- DU66245
1968
H57083 - H65572
DU66246
- DU85903
1969
H65573 - H67331
DU85904
- DU90282

Triumph
Twin Serial Numbers 1969 - 1983
The
models produced after 1969 contained the same prefix designators listed
above, that indicated the model type, but the numbers were changed.
A new coding system (numbers) was introduced using a two letter prefix
for the month and model season year, followed by a number which began
at 00100 for each model year and ran on irrespective of the model it
was stamped on. The model season started in August.
A
January
B
February
C
March
D
April
E
May
G
June
H
July
J
August
K
September
N
October
P
November
X
December
Letter
Months
Designated
Year
C
October 1968 - July 1969
1969
D
August 1969 - July 1970
1970
E
October 1970 - July 1971
1971
G
August 1971 - July 1972
1972
H
August 1972 - June 1973
1973
J
August 1973 - October 1974

1974
K
April 1974 - June 1975
1975
N
July 1975 - June 1976

1976
P
June 1976 - August 1977

1977
X
July 1977 - August 1978

1978
A
July 1978 - November 1979

1979
B
August 1979 - July 1980

1980
DA
August 1979 - July 1980

1980
DA
September 1980 - April 1981

1981
DA
May 1981 - February 1982

1982
EA
February 1982 - January 1983

1983

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