This swagger stick is furnished with a silver ball top and ferrule hallmarked for: 
Birmingham 1939 
Along with a makers mark: 
F.N 
For the famous Birmingham-based stick, whip & military manufacturer: 
Fredrick Narborough 

The ball top also features inials for: 
Cornwall Light Infantry 
The Duke of Cornwall's Light Infantry was a line infantry regiment of the British Army that existed from 1881 to 1959​. 

Whangee bamboo shaft. 

Attractive item ideal for a military collector or use. 

Measurements; 
Length - 76cm 
Diameter of the top - 3.1cm 
Diameter of the shaft below the top - 1.8cm 
Weight - 109g  
 
Good condition with some age marks to the top.