Thanks! There are a few that should bring decent money still:
1891 Seated Quarter - Grades around F12, so it could bring $30+ online
1854O Seated Quarter - Grades G4, so $40 or so
1901 Barber Quarter - Grades VG8-F12, so $30+
You can't put them on auction and expect this kind of money. But, if you list them for a fixed price and have patience, then I think you can.