This is the 1963 version (serial number 6307264) of the "No Name" Kiev-Contax with the original lens Carl Zeiss (west) Sonnar 50/1,5 n°1887552.
That first batch of no name kievs are engraved "made in ussr occupied germany"
and the lenses (the camera seems to have been sold with either the 1,5 or 2 sonnar) are genuine western Zeiss Stuttgart lenses.
Since Zeiss Ikon stopped production of his contax IIa and IIIa in 1961, it seems that there were some lenses left over... and that a deal was made involving Zeiss Ikon Stuttgart, Arsenal, and may be Carl Zeiss Jena in order to "germanize" the camera to sell for the american market. (other deals are known between the two branches of Zeiss during the cold war).
The 64 version doesn't have the special german engraving and seems to have been sold with a jupiter 8 as standard lens.
Those cameras are normal kiev4a but seems to have been through a very rigorous quality control process (may be in Germany to validate the engraving ?) as they are known to be of specially high quality.
Three questions remains open :
- were those camera ever sold outside the USA ?
- who organised the deal ? the american importer ? Arsenal (to bring some valuta in) ? Zeiss (to get rid of those stock lenses) ?
- are the serial number specific ? or included in the normal 1963 / 1964 production numbers ?