Westmoreland 1950s Glass Rooster on Nest Dish.

Westmoreland originally produced these extensive clear (crystal) versions. In later decades, original Westmoreland molds were acquired and beautifully reproduced by Mosser Glass (for Rosso Glass), which explains why you might find a piece with this exact shape completely unmarked and in stellar condition. There is one small chip on the side of the rooster cone as indicated in photos.  Unnoticeable from front and straight on view. It's more like a slice chip .  I've owned this or 60 plus years , it was definitely from my grandmother.    Ref G4