Yet the Engine # is CG49844. It looks untampered with and looks to be a U.K. Home model as it still has the tax disc & the U.K. Gas Tank. Yet in my restoration manual , 1971 models start with engine # NE01436-FUE30869 & 1972 models start with HG30870 - JGXXXXX, Any info is most welcome.
The year letter refers to model
year, not calendar
year, so HG (the beginning of 1972 model year production) is build date July (H) 1971
as new model production began during the previous calendar year.
The date code sequence for 1972 model production, therefore, is: HG (Jul 71), JG, KG, NG, PG, XG, AG (Jan 72), BG, CG (March 72), DG, etc.
"HG" means it was produced in August of 1971 for the 1972 model year.
H - July.http://www.tri-corengland.com/acatalog/Triumph_Dating_information.html
"A - January
B - February
C - March
D - April
E - May
G - June
H - July
J - August
K - September
N - October
P - November
X - December"
It seems unlikely, because the model year would normally begin in September, the code being "JG"
but with Triumph, sometimes strange exceptions to the rules happen.
J - August.
It is a myth that production commenced in the same month (August) every year.
CAUTION: The so-called "restoration manuals" are not always correct.
Often because the date code system isn't fully explained.