It has a Dennison style dry compass card design. Probably 1910/1920. It has a thick case design.
You can activate the needle-lock on the side of the case. On the inside of the glass there is a luminous arrow painted. Near the "S" on the card is stamped "England".
Contains Radium paint. (0.5 micro sievert/h)
If you are the site owner, please renew your premium subscription or contact support.