On the wooden beam: Jaeger-LeCoultre 24002.42 Prototype
On the wooden beam: Jaeger-LeCoultre 24002.42 Prototype,JLC - Chronometer 24000-42 two specimens,Jaeger LeCoultre Master Control Memovox - Q411842J,21996) Jaeger LeCoultre Master Perpetual Antoine LeCoultre 8,Jaeger-LeCoultre