This is almost certainly Atoni and from West Timor. Their culture is notable for its spatial symbolism, associated with a gender dichotomy. Male-female principle is important, as with the duality of sun-earth, light-dark, open-close, dry season-wet season, outer-inner, central-periphery, secular-sacral, right-left, and so on.
This a esthetically striking ethnographic mask originates from the Indoneasian island of Java. It is around 50-60 years of age, we have owned it for 30 years. It would make a fine addition for any collection and is exceptional condition for its age.
LOKI :The trickster god is a complex character a master of guile and deception. Mask is crated in the image of. VIKING MASK. Mask can be use for Wall decoration or be worn. Loki is an adept shape-shifter with the ability to change both form (examples include transmogrification to a salmon horse bird flea etc.) and sex.
My great uncle (Houston) traded for this from the natives when sailing the South Pacific Islands in his Sailboat The Balea in the 1960's/1970's. He wrote on the back of it in marker. It says "Old Ramu River Ancestor.and I can't make out the last word.