Upcoming Events

May
12
Sat
all-day Endurance Legends @ Donnnington Park
Endurance Legends @ Donnnington Park
May 12 – May 13 all-day
Endurance Legends @ Donnnington Park
Endurance Legends returns to Donington featuring the UK’s only 4-hour classic endurance race, with additional races from Lansdowne Classic Series and GP Originals, and a number of star guests.  Hundreds of classic machines are expected[...]
Jun
2
Sat
all-day Coventry Motofest
Coventry Motofest
Jun 2 – Jun 3 all-day
Coventry Motofest
MotoFest Coventry 2018 Motofest Coventry is to stage time trialling at this year’s event, giving the go-ahead for the return of competitive motorsport to a UK city centre for the first time in almost 30[...]
all-day Thruxton Circuit 50th Anniversar... @ Thruxton Circuit
Thruxton Circuit 50th Anniversar... @ Thruxton Circuit
Jun 2 – Jun 3 all-day
Thruxton 50th Anniversary Celebration from £12.00 Saturday 2 June 2018 – Sunday 3 June 2018   2018 sees Thruxton celebrate its 50th anniversary. To mark the occasion, a two-day event will celebrate everything Thruxton, with[...]

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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