It is worth what you are willing to sell it for, and someone is willing to buy it for.
Put it up for what you think it is worth and go from there.
I agree with the sentiment above. It is is only fake if you were to pass it off as something it is not. If it said Tudor on the dial, trying/pre tending to be a watch made by Tudor.
Besides that it is homage/clomage territory to me. Though mods can be wholly unique too of course, depending on the design.
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