Coin or token from 1925. S.AFRICA / Z.AFRIKA [Resolvido]

Please tell me what kind of coins or tokens these are from 1925. Material copper or bronze, diameter about 28 mm. Legend - S.AFRICA / Z.AFRIKA. Unfortunately, we don't have a photo of the other side or a better resolution photo. Thank you very much

 Neither - not a coin, not a token - it is a medal > 

N#65273 [27.85 mm] 

Thank you very much. For a long time I could not determine what it was.