Easy to answer, as now we knew what systems and missile types were exported to Vietnam...
SA-75A Dvina-A with V-750VK 11DK missile from 1965, V-750VMVK from 1969
S-125 Pechora with V-601 5V27 missile from 1972
S-75M2 Volga with V-755SU 20DSU missile from 1979
S-75M3 Volga with V-759 5Ya23 missile from 1985
... so it could be either the Pechora, or the V-750VMVK missile of the Dvina-A.
Last edited by Hpasp; 02/09/16 12:16 PM.
