Hi Joe,
First off, want to say that sure is a beautifully done Atlantis your uncle left you! I would like to help you with your questions but I fear that the value one may be too subjective for me to guess, since I doubt I'd ever try to sale mine. And it pretty much depends on who you come across in the marketplace. But I'd be happy to answer any other questions you might have.

-Taylor
http://www.sparksstudios.com/boatyard/atlantis.htm