New lamp find

I live on Federal Hill in Providence Rhode Island old neighbor that lives up the street and around the corner always said to me that she had some very old lamps that she wanted me to look at well yesterday I looked at them she was interested in a Crystal bowl I was selling so we opted to trade. these were wrapped in bubble wrap after I started to research them they're all signed Kaufmann there in beautiful condition no crazing no chips no cracks the bases have been converted into lamps with hand-painted wooden bottoms my research says that they might be 19th century vases converted to lamps I hope you enjoy the pictures they're pretty fantastic I would greatly appreciate any input