Hi, i want decode a tag for a charger 70 but the numbers doesn't match with the decoders ,i was visited some pages but all give me the same information and want to know where have i the error, some numbers match and some not, like a year number, they mark 1971 but in the 71 all chargers are W like coronets and this one is X....well the first line are
64 7 6
second line
1 1 26
third line
50 8 1 CGX LL1 B
fourth line
XP29 G1 5 33 A27 SERIAL NUMBER

I hope somebody tell me what's up with this numbers, thank you guys