Bobina was first. The birth of the electric locomotive from Pilsen was preceded by a spy affair
From September 1947 onwards, Swiss locomotive manufacturers were approached with requests to license certain components. Neutral Switzerland had survived the Second World War in good shape, which was not the case for the Skoda plants in Pilsen after the Allied bombing in April 1945. Negotiations went smoothly, but at that time the Communists were taking power in Czechoslovakia and they began to rule in their own way. Ivo Raab, in his book Electric Locomotives E 499.0, states that the Zurich firm Oerlikon ended the talks after they discovered Czechoslovak spies in their plant.
Source aktualne.cz/bobina-was-the-first-birth-of-electric-locomotives-from-a-creeping-forehead/