UPDATE: This offer is ultra-old.
The school librarian was cleaning out some cabinets and found these NIB selectric ribbons. There are three boxes. Let know if you want one for your Selectric (tryanpa@cox.net). I thought they might have been 0.5", but they are 0.65" so I cannot use them in another machine.
CAUTION: These are the high-yeild ribbons. They are the large cartridges, not the smaller ones.