curious about some numbers on a tag

[austent]

Finally get to start on my 1972 250C; I find it was manufactured 7/71; on the radiator support I unscrewed a tag that has the following numbers (I did send off to CA for interpretation):
the first sets are option codes;
the next is paint code
then chassis 114023 12 7 anyone know what the 12 and 7 are for?
next line is 0 21534 72043 anyone know what these are?

a little brake work and transmission adjustment and I should be able to get it on the road for non-snow days.

[socalbenz]

The "1" in the 12 indicates left hand drive. A "2" would be RHD.
The "2" in the 12 indicates an auto transmission. A "0" would be a standard transmission.

The 7 indicates the car was built for the US.

[mercmad6.3]

7 is the market the car was built for .n the cars data card it will be shown as 7xx .

The bottom numbers are the cars order numbers for production identification. . They will also be in the cars data card.