Former series 1996-2005. Diplomatic plates were black or blue on white with two numerals and two letters denoting the embassy. (BT= Honduras)
SRE DIPL MEX = Diplomatic Corps (private)
BN = France
SRE CONS MEX = Consular Corps
DM = E.U.
SRE MIS DPL MEX = Diplomatic Corps (embassy)
ET = Unknwon what Organization
SRE ORG INT MEX = International Organizations
NA = Unknown.
SRE TEC ADM MEX = non-diplomatic embassy staff