1924 NGC PF 63 Cameo Zeppelin World Tour Hugo Eckener USS Los Angeles Silver Medal POP 1/0 (22042704C)Mint State Proof Cameo significant and historic silver medal issued to commemorate the first non stop transatlantic flight (not to be repeated until Lindberg's flight in 1927). Certified by NGC to PF 63, Population Census: this coin, none higher. Highly lustrous, mirror surfaces. Scratches are present on the holder. Airship LZ 126 was delivered to the US Navy as part of Germany's WWI War Reparations and renamed USS Los Angeles (used for training