SERIAL NUMBER GUIDE 2017-11-12T20:15:20+00:00

Serial Number Guide

Triumph

500cc & 650cc Pre-Unit Engines

1950 100N and up
1951 101NA thru 15808NA
1952 15809NA thru 25000NA
Then 25000 thru 32302
1953 32303 thru 44134
1954 44135 thru 56699
1955 56700 thru 70929
1956 70930 thru 82799
Then 0100 thru 0944
1957 0945 thru 011115
1958 011116 thru 020075
1959 020076 thru 029363
1960 029364 thru 030424
Then D101 thru D7726
1961 D7727 thru D15788
1962 D15789 and on

500cc Unit Engines 

1957 H101 thru H760
1958 H761 thru H5484
1959 H5485 thru H11511
1960 H11512 thru H18611
1961 H18612 thru H25251
1962 H25252 thru H29732
1963 H29733 thru H32464
1964 H32465 thru H35986
1965 H35987 thru H40527
1966 H40528 thru H49832
1967 H49833 thru H57082
1968 H57083 thru H65572
1969 H65573 thru H67331
1970 KD27850 and up

650cc Unit Engines

1963 DU101 thru DU5824
1964 DU5825 thru DU13374
1965 DU13375 thru DU24874
1966 DU24875 thru DU44393
1967 DU44394 thru DU66245
1968 DU66246 thru DU85903
1969 DU85904 thru DU90282

Triumph 650cc & 750cc Twins and 750 Triples

Beginning in 1969, Triumph started using a 2-letter prefix for frame and engine numbers. The first letter indicates the month of manufacture. The second indicates the year of manufacture.

Month Year
January A 1969 C
February B 1970 D
March C 1971 E
April D 1972 G
May E 1973 H
June G 1974 J
July H 1975 K
August J 1976 N
September K 1977 P
October N 1978 X
November P 1979 A
December X 1980 B

1981-83 Triumph Engine Numbers

1981 KDA
1982 EDA
1983 BEA

BSA

250cc B25, C25

1967 From C25-101
1968 From B25-101
1969 From KC06301-B25S
1970 From JD00101-B25S
1971 From JE00101-B25SS

441cc B44 Victor Special 

1966 B44E-101
1967 B44EA-101
1968 B44B-101
1969 PC07723-B44VS
1970 HD00101-B44VS

441cc B44 Shooting Star 

1967 B44R-101
1968 B44B-101
1969 PC07793-B44SS
1970 JC00101-B44SS

500cc B50 All Models 

1971 JE00101
1972 JG00101
1973 Not Published

500cc & 650cc A50 & A65 

1962-65 Not Published
1966 A50/A65 * 101
1967 A50/A65 * A101
1968 A50/A65 * B101
1969 A50/A65 * C101
1970 A50/A65 * HD00101
1971 A65 * JE00101
1972 A65 * JG00101
* Insert model letter of motorcycle here.
  H = Hornet
  L = Lightning
  F = Firebird
  S = Spitfire
  T = Thunderbolt

750cc A75 Triples

1969-70 A75R-101
1971 HD00101-A75R
1972 JG00101-A75R
1973 Not Published

Norton

Norton Year Codes for Models Between 1946 and 1960

Code Year
A 1946
B 1947
C 1948
D 1949
E 1950
F 1951
G 1952
H 1953
J 1954
K 1955
L 1956
M 1957
N 1958
P 1959
R 1960

Norton Model Codes

Code Model
2 16H
3 18
3T 500T
4 ES2
6 19R
7 Big 4
8 16H or Big Four Plunger
9 19S
10 International 40
10M Manx 40
10M2 Manx 40 Featherbed
11 International 30
11M Manx 30
11M2 Manx 30 Featherbed
12 Model 7
122 88
13 50
14 99
15 77 & Nomad
16 Nomad
17 Jubilee
18 All 650cc Twins
19 Navigator
20 Atlas
20M3 Commando (Distributor)
20M3S Commando (Camshaft Pionts)
50 AMC 50
ES Electra
ES2 AMC ES2
D De-Luxe Twin
SS Sports Special Twin
Q Quietening Ramp Cams

Norton Serial Numbers

Year Number
1945 1001
1946 2131
1947 7756
1948 13792
1949 20701
1950 27100
1951 35560
1952 42700
1953 48900
1954 55350
1955 60700
1956 66600
1957 71360
1958 77400
1959 80488
1960 87038
1961 94500
1962 101060
1963 105000
1964 108000
1965 111650
1966 115870
1967 119760
1968 124300
1969 130000
1970 134700
1971 141700
1972 200001
1973 212278
1973 300000 (850)
1974 307311
1975 325000 (MK3)
125001 (Frame)

Norton 750 Twins Numbers

750cc Twins
1963 From 104001
1964 From 108000
1965-68 From 114870
1969-70 From 138973
1971 From 142151
1972 From 200004
1973-74 From 301000
1975 From 330000