Hi Jonathan,
Thank you for using Mearto for your appraisal inquiry.
Based on the photographs and information provided, and subject to examination, this is:

A Depression era reverse-painted glass lamp shade
Signed C. Vormino, American , early 20th Century
Reverse painted with a winter landscape, signed indistinctly
8 inches high, 16 inches diameter
CONDITION: appears to be in good condition with wear commensurate to age and use
PROVENANCE: inherited
$20-30*
*represents a fair-market value for auction purposes; retail or asking price may vary.