 In 1949, the Swiss government signed a contract to locally manufacture the Vampire FB.6 in Switzerland using British-built Goblin engines; accordingly, a batch of 85 Vampire FB.6s were produced.In 1952, the first production Vampire NF.10 was delivered to Switzerland for evaluation purposes.In 1949, the first batch of 75 Vampire Mk.6 (J-1005 to J-1079) was purchased.