What's the point view in "After Twenty Years" by O. Henry?

In the story "After Twenty Years" by O'Henry the view
point is told by an unknown narrator.  This type of narrator is referred to in the
literary world as a third person limited narrator. 

One
never sees the narrator and he is not able to tell us what is going on when the people
think.  He simply tells the reader the events as they are happening and acts like the
one paying witness to the conversation between the two
men.   

The two men in the story have been apart for twenty
years and now they are coming together but only one of them knows who the other one is. 
The man who has returned to town does not know the policeman is his friend from the
past.