Fongers Bike

The first system (production of 1902's): The numbering of the bike is very simple framework that is appropriate serial number and production.

Both systems (production years of 1920-1940): The numbering order of production-based bikes, bike type and serial number serial production. Suppose 2042-64, the first two numbers mean production bike in 1920, two the second number means the series of type 42, and two of the three numbers mean bicycle to-64 for the year and type of bike series in question. Other examples of 3506-2, this means the production of the second bike for six model series in 1935.

All three systems (production years 1940 to 1970): The numbering of the bike frame made ​​with a letter code to represent the year of production.

Table 1: Some numbers Fongers unusual context / distorted

frame number (old system then: number of barrels)	frame number (new system)	constructed / provided
795	-	December 1918
1500	-	March 1921
1731	2201-31	January 1922
7665	327665	1932
8964	358964	1935
12078	4012078	1940

Table 2: Full list of dates for the period 1940-1970, when PFG was acquired by Batavus

Years	Code letter
1940	Z
1941	K
1942-1945	F
1946-1947	N
1948	G
1949	E
1950	R
1951	S
1952	H
1953	W
1954	V
1955	Y
1956	T
1957	C
1958	D
1959	L
1960	P
1961	M
1962	U
1963	B
1964	X
1965	a
1966	Z
1967	K
1968	H
1969	T
1970	a

Table 3: Numbers based on the model of bike and female

Model	Bike man	Bike girl
HH/HD	3500	1900
HZ/DZ	1500	600
BB/BD	500	100