I don't mean to derail the conversation, but happy to hopefully answer some of the open questions. There are different types of IP protection that could be relevant. Products and designs thereof can be protected by patents. Historical reproductions generally aren't implicated, though, because the patents would have been long expired (patents only last a fixed number of years). Trademarks protect the naming, as you may expect. To have a protectable trademark, the name is question must be used in commerce (not just have been used in commerce in the past). Unless renewed, filed trademarks expire after a certain number of years. The key with trademark protection is consumer confusion, and the "fair use" doctrine allows using even valid trademarks under certain circumstances. You'll note that Forstner did not call it's forthcoming product the "1450 bracelet" or something along those lines. Though we may be able to do that given that it isn't offered by Omega anymore, we instead accurately described it as a 1450-
style bracelet and proceeded to detail how it was designed after the vintage version. Though I doubt anyone would be confused, we certainly aren't trying to pass our product off as a vintage bracelet, or an OEM Omega bracelet.
Hope this is helpful!