I was just informed by an expert that the mark is probably OVG - Olde Virginia Glass line by Fenton (circa 1971). This makes sense due to the style of the figurine being of a cat peering out of a slipper which is a common theme of Fenton Art Glass.
However, I was hoping it was of a much earlier date (early 1900's) as I was told it belonged to my great-grandmothers collection. It is possible that my grandmother purchased it in the 70's to add to the collection. Is anyone else aware of any other possible makers using a OVG, VGC, or any other combination??