Vintage Medium Metal Table Lamp South American Mayan Aztec Design

Unsure of age, style, origin. Likely acquired in Asia or Europe during the 40s 50s            

Any knowledgeable info/valuation much appreciated.

Lampshade is yellowing and a bit dirty, lamp has stains on it. Socket has been replaced.
H x W (with lampshade on) 33 x 13.5 inches