vintage glass replacement shade, student lamp chimney for schoolhouse desk light

Vintage clear glass shade with chimney style fitter, for an old student desk or table lamp. This measures 6 1/2" across the widest part of the shade, with a fitter 2 7/8" in diameter x 1 1/4" deep. The shade is 5" in height above the fitter.

This is in very good condition, nice and clear, no chips or cracks.