Welcome! It is a difficult decision with this particular gun; the scratches and (more importantly) pitting are significant. However, given the balance of the finish (pretty good for a nearly 110 year old gun) and its mechanical condition I would suggest leaving it alone. As bad as some parts of the metalwork appear, you only have the (balance of the) original finish once, no matter how nice the restoration turns out.

The factory used to accept pre-model stamped (before ca. 1958) guns for refinishing but stopped doing so many years ago, with the lack of spare parts and the desire to set all guns mechanically right. Good luck in your decision.

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Alan
SWCA LM 2023, SWHF 220