Not trench art and not made of objects found in the battlefield, but hand made pieces of copper and brushed with a mix of soft heavy with low melt piont combo of zinc, lead and possibly mercury and what ever other kind of scrap they get their hands on in the filthy dirty streets of India. The item is then purchased buy brokers for next to nothing from the maker, who sells to an other broker dealing to the west, who marks it up even more. It ends up at like Imports stores and with Flea Marketeers and is marked up a hell of alot more and sold to end buyers all over North America. In 20 minutes I can be at a large import warehouse in Denver and load up my pickup with this stuff. All of it just made the month or two before.
I have noticed in recent years these decorative object have not been made in copper, but of sheet iron and simulated patina added by some mixed concoction of acids and caustic formula. I think your vase may be from the 1980s when copper wasn't as valuable. Your item is very nice looking and will always have that copper value. As many know a solid copper penny is worth more in copper then a penny these days and who knows? copper prices have, and I believe will always spike in world demand again and again in the years ahead. Good Pick!