I could be wrong but judging from the crustiness of the winding crown and damage to the side of the case, I suspect this is an object that was buried and became a detection find.
Not total junk however because it still has its bow. On auction sites, you see many pocket watches with missing bows... and loose original bows are not easy to find. Yours looks like it would be a size 16 or a size 18. I bet someone would buy it for the bow and the crown, and possibly the back cover if damage is limited to the plating.
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