AFAIK, early Chas. Daly shotguns were selected for high quality, sourced first from "Prussia" (Suhl, Germany) makers like Schiller and Lindner, then later Heym and Sauer.
Some early guns were also sourced from J&W Tolley (England). Newmann (Belgium), and even Lefever Arms (New York).
Guns were first marked "Charles Daly" around 1875, so your 10ga hammergun could have been made anywhere after then, up to the time hammerguns fell from grace in favor of hammerless designs.
The hidden bottom metal of the action watertable/flats, and the barrel bottom(s) & flats should have several stampings, IF the gun was sourced in Europe - proofmarks (which can be approximately dated), and perhaps a maker's mark, besides the various chambering & loading specifics required by European proof laws.
Close-up, clear pics are best.