"Emile Gallé Vase With Prunus"
Art Nouveau vase in the shape of a howitzer with a ring-shaped neck in multi-layered glass with a fine acid-etched decoration of myrobalan and prunus branches in shades of turquoise blue, dark blue, sky blue and purple on a satiny and opaque light yellow background. Gallé signature on the decoration. There is a small bubble that was produced during manufacturing, see photo. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato