Corgi Aviation Archive Collector Series AA37602 Westland Wessex HAS.Mk 3 Diecast Model RNFAA No.737 NAS, XP142 "Humphrey", HMS Antrim, Falkland Islands, Falklands Conflict, 1982. Designed by Sikorsky as a US Navy anti-submarine military helicopter, the CH-34 Choctaw first flew on March 8, 1954.