Type III of the Royal submarine badge (introduced in 1937), made of solid silver 900/1000, by Zagreb?s maker "Knaus", 51.32x65.25mm, with screws on reverse cut off, and badge itself soldered onto solid silver cigarette case (undoubtedly, by the recipient, and presumably after his retirement), whose initials "KS" are engraved inside of the case. In very fine condition.