Tall Aluminum Vase...???

We have this thing that seems to be (a vase?) made of aluminum and its about 24" tall and very heavy. It has the makers mark on the bottom and we were told that its called "Art Deco" but if 22 years of owning it we still have no idea what the mark on the bottom means or who made it.

If anyone knows anything at all we would be very grateful for your help.

Thank you all,
Dave and Andrea