- Bezeichnung: Borduhr
- Anforderungszeichen: Fl. 23886-1
- Baumuster: BoUK 2
- Bauart: 2.Version
- Hersteller: Kienzle Uhrenfabriken A.G., Schwenningen
- Baujahr: ca. 1940
- Besonderheit: sehr frühes Gehäuse aus Buntmetall, schwarz lackiert mit geschwungenem Einbauflansch
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