19TH C. BRONZE NEPALESE MASK

I saw this mask and bought it - right before another person requested to buy it.  The picture unfortunately does not do it justice, because I had to lighten it somewhat to show the detail.  It actually has a dark brown beautiful burnished patina.  I believe it is Mahakala, but there are so many deities and I am not at all an expert on them, so please correct me if I am wrong.  It has wonderful detail and great presence.  It stands 9 inches high, 11 1/2 inches with the stand.  $600