This picture is from a WWII manual about aircraft survival equipment. It is dated 23 November 1943, and it clearly shows a Superior Magneto wrist compass with a canvas wrist strap. That’s much earlier than the earliest-dated Superior Magneto compass that we have found so far. Marcel Struijk sent me these pictures. The second picture shows more detailed photos from the kit. The color photo is from https://www.wwiisurvivalequipment.com/life-rafts-usaaf. This predates the earliest date I have seen on this type of compass by at least 6 months.

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