What to do with an Astra III B sextant

[Rockfish]

I have an Astra III B sextant that I want to find a buyer/good home for. I live in the Vancouver BC area. It seems to be in exceptionally good condition even though it is technically rather old. I say "seems" because I don't have the expertise to check it.
I bought it over around 15 years ago when I was planning to sail to Japan from Vancouver. I only used it on land for a few practice shots then stored it away in my house. Now, it's time to clean house and I certainly don't need it any more since I sold the boat 8 years ago.
What seems like a reasonable price for something like this?
Comes in a solid plastic case with various attachments.
If anyone in the Vancouver area is interested, I would be quite happy to show it them.
R.