Appears to be a pointed crown guard case (consistent with the 8xxxxx serial) with a later feet-first dial. That hurts the value a lot and makes valuation much more difficult. You will probably never find the right gilt-gloss dial for the case. With the right dial, in working condition, it might be worth $25k, even with the rough case. Without the right dial, much less. Of course, the unknown non-working condition of the movement is also a major concern.
It still has a lot of value, even as parts (the dial and hands are attractive), but I think you may need to do your own homework, since it's not so straightforward.
If the dial had been correct, in your place I might have bought it as a project, even with the rough case and non-working movement. With the later dial, I wouldn't be interested in it personally. It would just be something to part out, which doesn't interest me really. If you're interested in selling it as parts, you could do some research and figure out an offer that will allow you to make a profit.
Hope this helps.
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