Vintage Murano Style Amber Glass Studio Art Twisted Sculpture 6" Hand Blown MCM

Vintage Murano Style Amber Glass Studio Art Twisted Swirl 6" Sculpture MCM Hand Blown, excellent clean condition from a smoke-free home. This is from my own personal studio art glass collection. The glass is iridescent amber and depending on light the color is darker or lighter. Important: There is a number etched on the side right above the bottom, but I am not sure what that means (see picture).