York
Style 1:
The Date of Manufacture is in the second through fourth digits of the serial number and represent the month and year of production:
W0K5896090
W 0 K 5 896090
K (Month) September
0, 5 (Year) Combine the Digits = 2005 (USE MONTHLY CHART BELOW)
Style 2:
The Date of Manufacture is in the second and third digits of the serial number and represent the month and year of production:
WAKM011479
W A K M011479
A (Month) January
K (Year) 1980 or 2001
A January G July
B February H August
C March K September
D April L October
E May M November
F June N December
A 1971 or 1992
B 1972 or 1993
C 1973 or 1994
D 1974 or 1995
E 1975 or 1996
F 1976 or 1997
G 1977 or 1998
H 1978 or 1999
J 1979 or 2000
K 1980 or 2001
L 1981 or 2002
M 1982 or 2003
N 1983 or 2004
P 1984
R 1985
S 1986
T 1987
V 1988
W 1989
X 1990
Y 1991