I would call this one a strong "Good". It may get close to "Very Good" with some of the lettering in her cap readable.
No sir. Extra fine will have much definition in Lady Liberty's hair and the "Liberty" in her cap will be fully readable. An XF40 example is below.
B&D grading says "VG-Any three letters of LIBERTY on cornet must show..." and "F-All letters in LIBERTY...The letter I...must show", so I would say VG
I'd say a strong VG details (VG10, not VG08) -- it's got more than three letters in LIBERTY, but not all of them, and it's been heavily cleaned/polished.