Rocker panels dates identification

[Shelbypat]

Hi all. Can anayone help to understand the rocker panels dates ?

They seems to start from the end...

 
What is the stamping date ?
2D= second week of april ?

[TA Coupe]

Rotated and slightly enlarged first picture for you to make it easier to read.

    Roy

[J_Speegle]

Hi all. Can anayone help to understand the rocker panels dates ?......What is the stamping date ?
2D= second week of april ?

10 31 D2 would decode as (10)Oct (31)31 (D)Dearborn stamping plant  (2)2nd shift

[Shelbypat]

Thanks
I hadn't thought D would refer as Dearborn.

[Coralsnake]

Stamping plant not assembly line