Originally Posted by bigtree
The first 3 numbers are the die No. next 2 are the QC inspectors and the last 2 are the year manufactured.
If the number is 8 digits long, the first TWO numbers are the die e.g. 35
If the number is 7 digits long, the FIRST number is the die e.g. 7
The next four are two different things, the final two are the year.
And then there's the big number beside the head size.