A nice Zulu or Shona Ax ?

[drac2k]

I recently picked up this ax which I believe to be either Zulu or Shona, based on the wire work; I'm leaning towards Zulu because of the tack work.
The ax belonged to the estate of Edward Frey, who was a collector and researcher of Oriental Arms. The addition of the leather loop is interesting as I believe it was influenced by European contact, so I am guessing late 20th Century.
As shown the ax has a broken piece on the head, but everything is firm, so as the previous owner I think I will leave it as is.