What do these Chinese symbols mean?
the characters are:

碧 - http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=碧

王 - http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=王

玲 - http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=玲

玩 - http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=玩

very likely, it's an antique. try to contact sotheby, or christie :)