Cap badge, British Transport Docks Board?

Cap badge, It is possible that this is an earlier pattern for th British Transport Docks prior to the bollard pattern shown in UNI4573.

Object Details

ID: UNI4578
Collection: Uniforms
Type: Cap badge
Display location: Not on display
Creator: Unknown
Date made: Unknown
People: Sealink UK Ltd
Credit: National Maritime Museum, Greenwich, London