Decoded everything EXCEPT the build date.

Dana67Dart said
B06 = November 6th.

1= Jan
2= Feb
......
9 = Sept.

There is only one digit for the month so they code the months that have 2 digits, A, B, C

10 = A = Oct
11 = B = Nov
12 = C = December

THANKS!! I was confused by the letter B. It was built 6 days before my birthday!.