Observed at a recent show was a 1940-42 code sn. 2175l (ell)matched except proper mag. Unremarkable pistol with receiver almost totally plum.
what intrigued me was the right grip panel had the capital letters ACS burned in on the long axis The letters were placed in a very even manner suggesting that all three were applied simultaneously with a hot brand Wood was evenly charred or colored black in the recesses. Pistol exhibited no pitting or corrosion of any note, just lack of finish on most of receiver suggestive of poor bluing salt condition. Would greatly appreciate any guess or advice as to the meaning of the markings. Maybe a factory branding or non military issue? War time or Post war? Thanks in advance for your input. Neil