1979-1993 A-P Code
(A one-letter alphabetic code stamped into the lid damper)
A: 1979
B: 1980
C: 1981
D: 1982
E: 1983
F: 1984
G: 1985
H: 1986
J: 1987
K: 1988
L: 1989
M: 1990
N: 1991
O: 1992
P: 1993
1994-Present "AUTHORIZED" Code
(A two-letter alphabetic code stamped into the lid damper.)
EH: 1994
EO: 1995
ER: 1996
EI: 1997
EZ: 1998
EE: 1999
DD: 2000
DA: 2001
DU: 2002
DT: 2003
DH: 2004
DO: 2005
DR: 2006
DI: 2007
DZ: 2008
DE: 2009
AD: 2010
AA: 2011
AU: 2012
AT: 2013
AH: 2014
AO: 2015
AR: 2016
AI: 2017
AZ: 2018
AE: 2019
UD: 2020
UA: 2021
2013-Present "CONSUMABLE" Code
(A nine-character alphanumeric code laser-etched onto the lid damper. The code consists of two letters + seven numbers.)
CO xxxxxxx: 2012
CN xxxxxxx: 2013
CS xxxxxxx: 2014
CU xxxxxxx: 2015
CM xxxxxxx: 2016
CA xxxxxxx: 2017
CB xxxxxxx: 2018
CL xxxxxxx: 2019
OE xxxxxxx: 2020
OC xxxxxxx: 2021
2017-Present "BLAQKSMIXH" Code
(A nine-character alphanumeric code laser-etched onto the lid damper. The code consists of two letters + seven numbers.)
BM xxxxxxx: 2017
BI xxxxxxx: 2018
BX xxxxxxx: 2019
LH xxxxxxx: 2020
LB xxxxxxx: 2021