30-06 brass manufacturers

[argrendel]

I’m helping a gent develop a load for his Rem 742. He brought some brass over, and the first four Remington pieces I picked up had cracks in the necks.
i have a bunch of 06 that were given to me years ago, so I started sorting by manufacturer. What did I find? One piece marked “Sears”! Never heard or seen one! Any idea who manufactured them?

 

[SSL]

Winchester/ Western.

 

[argrendel]

Thank you!