8.25 Diff date code help

[74Dartboy]

I have a 2852905 8.25 diff under my 74 Dart Sport. Can soeone help identify the unit date code? It has the following marking on the diff: 2852905, 30103, a large number 7, and a 2323. Any help would be greatly appreciated.

 

[65dartcharger]

I have a 2852905 8.25 diff under my 74 Dart Sport. Can soeone help identify the unit date code? It has the following marking on the diff: 2852905, 30103, a large number 7, and a 2323. Any help would be greatly appreciated.
View attachment 1715668630

The housing was casted 232rd day of 1973. 30103 would be the supplier I think.

 

[74Dartboy]

Thanks for the reply and information.