ArtMetal

Separate pieces with edges folded back as flanges and probably riveted since there is no evidence of heat patina anywhere. It might have been tacked with a tig, or soldered. VERY CAREFULLY.
You can see the separate instances of oil canning by the bent corners on the smooth pieces, and there are some small hammer marks from adjusting the edge bend to accommodate the applied bead in several places.

Nice piece.

Gene Olson
Sculptor
Elk River, MN