Serial Number Guide

Triumph Engine and Frame Serial Number Guide for years 1950 through 1983.

* From 1969, frame and engine numbers used a 2 letter prefix. The first letter denoted the month of manufacture, and the second letter denoted the year. BSA used this number sequence, too.

		500 and 650 Pre-Unit
1950		1001N-
1951		101NA-
1952		15809NA-
1953		32303-
1954		44135-
1955		56700-
1956		70930-
	500 UNIT
1957	H101-	0945-
1958	H761-	011116-
1959	H5485-	020076-
1960	H11512-	029364-
1961	H18612-	D101-
1962	H25252-	D15789-
		650 UNIT
1963	H29733-	DU101-
1964	H32465-	DU5825-
1965	H35987-	DU13375-
1966	H40528-	DU24875-
1967	H49833-	DU44394-
1968	H57083-	DU66246-
1969	H65573-	DU85904-

Month *
January	A
February	B
March	C
April	D
May	E
June	G
July	H
August	J
September	K
October	N
November	P
December	X

Year *
1969	C
1970	D
1971	E
1972	G
1973	H
1974	J
1975	K
1976	N
1977	P
1978	X
1979	A
1980	B
1981	DA
1983	EA

	AIR FILTER ASSY, OFFSET (AIR FILTER ASSY, OFFSET) Unit price: $60.00 Quantity: 2
	U-BOLT, SADDLE BRACKET (U-BOLT, SADDLE BRACKET) Unit price: $15.00 Quantity: 1
	WASHER, SPRING, DOUBLE, 7/16 (WASHER, SPRING, DOUBLE, 7/16) Unit price: $3.50 Quantity: 2
	SPRING, CLT, 500-UNIT, 650PU (SPRING, CLT, 500-UNIT, 650PU) Unit price: $3.00 Quantity: 2
	PLUG, OILWAY, CYL, TRIPLES (PLUG, OILWAY, CYL, TRIPLES) Unit price: $5.00 Quantity: 2