An ingenious/innocent looking piece of personal field kit.
Un-screw the base to reveal a concealed miniature compass.
Excellent condition, being very late war dated and as such probably un-issued/un-used.
Brush is I believe badger hair with the body made of brown Bakelite.
Compass is in working condition.
A whole range of items (to include concealed weapons) was produced by MI9 to aid escaping servicemen and also agents working behind enemy lines !