I have a few of those in my office. Demo room too full! I wonder if any museums would want to take 70-100yr old sextants.
I don't know, but if they are pretty (and probably cheap), a lot of steampunks want to incorporate things like sextants into their costumes. I have one the cheap Harbor Freight sextents on my steampunk camera:
The idea is to have things in a modern cell phone in my steampunk camera, and I use a sextant and compass for a steampunk equivalent of a GPS (along with the pocket watch). And no, I don't know how to use it. I doubt those $10 sextants are accurate even if I knew how to use it.