Confused about this 1911 rand.

[Mikecp@2022]

The receiver is a Colt (GHD) mfg 1944, and the slide is from Remington Rand (third slide logo.) The frame wear digits BA which is Benecia Arsenal, your pistol as been refurbished at some time during or after WWII. And the grips does not correspond to 1944 period gun, Coltwood plastic grips for this period should have a large reinforcing rings around screws.
I cant define the marking ANAD