Vintage glass lamp shade with reverse ribbed optic dot pattern on the inside

It is hard to say exactly what color this lamp shade is. The pictures do show an accurate likeness.

Measures 9 5/8" Fitter x 6 1/4" tall x 9 5/8" at the widest

The top and fitter are a little bit rough from being removed from the mold during manufacturing otherwise the condition is good preowned, stored, never used