VINTAGE SET STORAGE TUBE

Part of a Vanity Set 

Really not sure of the age.....1940's / 50's
Would have been part of a larger set I guess
& Used to store Clips or Pins??
It's not really long enough to store Hat Pins

The tube part appears to be some sort of plastic
The two small caps at either end could be bone as they 
appear to have a grain running through......please see picture  4

175mm Total Length x 30mm Diameter of the top lid