'Guess I'm supposed to know 380s, but I don't recall ever having seen that pistol.
My best guess would be based on black-painted finish (Davis), slide (Davis), trigger (Davis), rear sight (Davis), one-screw grip panels (Davis), and extractor pin (Davis). If the breechface marks are of the "arched" variety, I'd say it was designed in Stockton, CA.
(At least, the
right side was).