From January 1951 na ad of Russian câmera
They say Contax II but it is really a Kiev 2
They say Jubilee but it is a Komsomoletz
They say Jubilee II but it is a Lubitel (1)
They say Ikomat C but it is a Moskva 2
Take your own conclusions
Regards
LP

http://www.ussrphoto.com/UserContent/2392016_popphoto lubitel etc.png