Upcoming Events

Aug
24
Fri
all-day Classic TT Week I.O.M. @ Isle of Man
Classic TT Week I.O.M. @ Isle of Man
Aug 24 – Aug 27 all-day
The TR3OC will be celebrating the 50th Anniversary of our iconic British triples at the 2018 Classic TT Races presented by Bennetts. TR3OC is organising a spectacular display of both road and racing triples together with[...]
Sep
7
Fri
all-day 15th French Trident & Rocket 3 I...
15th French Trident & Rocket 3 I...
Sep 7 – Sep 9 all-day
  CLUB TRIDENT ROCKET 3 FRANCE   15th French International Trident & Rocket 3 Club Rally 7th, 8th & 9th  September 2018 From Friday afternoon to Sunday noon 1968 – 2018 You are welcome to[...]

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Factory Numbering System

Machine numbers are composed of a model number, a two character date code and a five digit serial number. On some models, the model number is a prefix and on others it is a suffix. For example:

T160NN43128

CH27346T150V

The actual month of build is shown by the first letter.  The second letter gives the model year.

Production for sales in the following year began in August, so the prefix NH indicates a 1973 model built in October 1972.

Frame and engine numbers matched when the machines left the factory.

First Letter Second Letter
A  January C  1969
B  February D  1970
C  March E  1971
D  April G  1972
E  May H  1973
G  June J   1974
H  July K  1975
J   August N  1976
K  September
N  October
P  November