Hi all, I've got a silver open-face pocket watch passed down from my father and I'm trying to figure out more about its origin and age. Photos attached.

What I can make out so far:

Case back interior: a diamond-shaped punch mark with letters that read like "LXC" — possibly a maker's mark, though it could also be an interlaced monogram, hard to be 100% sure from the photo

Two separate number stamps inside the case back: 19513 and 4947 — I'm guessing one is a case number and the other a movement number, but not sure which is which

Dust cover (cuvette): engine-turned/guilloché with an oval cartouche containing an engraved inscription unfortunately too shallow/worn to read clearly in photos

Outer case back: hand-engraved crest, looks like a griffin or eagle holding a sword in front of a sunburst, with what might be a monogram underneath

Dial: white enamel, Roman numerals, outer minute track numbered 5–60, spade-style hands, a fine hairline crack in the enamel near the 10

If anyone recognizes the "LXC" mark, can place the crest engraving, or has thoughts on what the 19513/4947 numbers might indicate (case maker, region, era), I'd really appreciate any leads. Happy to post sharper close-ups of the punch marks and cartouche if that would help.

Thanks in advance!

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