This conductor's baton is furnished with a repousse silver top, collar, and ferrule, all of which are hallmarked for: 
'London 1925' 
With a maker's mark: 
'O.O' 
For the London-based baton manufacturers: 
'Oskar Olsen' 

The collar has a vacant cartouche suitable for engraving. 

Ebonized shaft. 

An ideal item for a musical collector or for use 

Measurements: 
Length - 51cm 
Diameter of the top - 1.9cm 
Diameter of the shaft under the top - 1.4cm tapering to 0.8cm 
Weight - 80g
 
Very good condition with some dings to the end. Small area of varnish loss to the shaft