CEF means it's a Capital Edition flute. I'm not sure about the 7000, but the "E" probably means it has a split-E and the "O" probably means it has offset G. Just guessing, though.
For more information on the currently available Jupiter Capital Edition flutes, see the link below.
http://www.jupitermusic.com/jbi_instruments.aspx?cId=16&lId=1&sId=5
For more information on the currently available Jupiter Capital Edition flutes, see the link below.
http://www.jupitermusic.com/jbi_instruments.aspx?cId=16&lId=1&sId=5