Thank you all for your assistance!
After a further and thorough search I found the book "The Gods of War: Sacred Imagery and the Decoration of Arms and Armor" by Donald J. LaRocca, published by Metropolitan Museum. In the book, a very similar figure is described as Batara Bayu (God of Winds). The author also briefly describes the atributes that allow this positive ID.
The book is available for reading online and free downloading at the link below:
http://www.metmuseum.org/research/me...Arms_and_Armor