15" Tall order Unmarked Amberina Glass Vase

We pride ourselves in researching each item as order thoroughly as possible but for this piece, we are stumped! This massive glass vase (umbrella stand?) is 15” tall, with a 6” diameter bottom and 4 1/2" diameter mouth. It weighs in at slightly over 5 pounds! It seems to be a pressed glass vase with three clear seams. It is not carnival glass but there is a slight iridescent sheen in incandescent light. It has classic amberina coloration however, it does not match any maker's patterns or even styles I've ever seen. In each of the three panels there is a medallion, surrounded by lattice work. The central panel is highly decorated- covered by poppies? that spill into other panels. Some small bubbles and debris can be seen within the glass, see final pic, but they do not affect the appearance or integrity of the piece. They just enhance the mystery! This lovely giant is absolutely chip and crack free - honestly flawless and much richer in color than the photos do justice. I think it would look stunning on a sunny porch.