Two 1911 Commercial with Holsters

[browningautorifle]

Two commercial .45s. Nice. The 1911 appears to have a marking on the left rear of the slide? The lighter coloured holster on the left has no US? Or is that just the way the pic turned out? The darker holster looks to be WW1. What marks are on the back? Nice pair to have, 1911 and an A1. Both C numbered.

And how careless of me to not mention the Mills pouch and an Eagle snap pouch. You NEVER see those.