This is an antique Fulper art pottery vase from the early 20th century. It is a 3-handled bulbous vase with a purple color and blue crystal drip finish. The vase is signed and has an impressed backstamp. The purple has a matte finish with a more glossy blue almost crystaline drip overlay.  Seems like back in the 70's when I was more focused on American Art Pottery we called this glaze combination Elephant Breath, but I couldn't find a modern reference using this term.  The style is from the Arts & Crafts Period.