Vintage MCM Black Amethyst Glass Vase 11”

Vintage black amethyst vase approximately 11” tall. Beautiful shape with clear, thin glass band in the neck, which also shows evidence of the glass-making process. Foot also has evidence of glass-making process with its imperfect shape (stands firm still). 3-4 air bubbles. No chips or cracks. Please see photos and zoom in for details.