SL/R107: VIN Decode Help
New here. I would greatly appreciate any help on decode of VIN 10704412021539, a 1974 450 SL.
Interestingly, the plate on the radiator support has 107044 12 03157 7 and is different from the VIN. I have managed to decode most of the three number codes on this plate. What is the significance of the number on the first line?
4706106 7B
The color line is 917G 917G 6. Aquablau/aquablau body and hardtop. What is the "6".
Just starting to learn. I originally posted this in wrong forum, sorry.
Many thanks



