A puzzler on the vase is the foot, or lack of one, I should say. I searched a little last night for old Murano vases with this type of bottom and found only one. It was by a company, Ferro & Figlio, that I doubt did Ivo's vase. I've not seen latticino of this form done by them. The bottom of the vase is not typical of Murano, but may be found. Your vase is a puzzler, Ivo. My thoughts on its age have gone back further after looking at pictures of old pieces last night.