Hi by all!
Reasons correct and with them I agree. But it is simple. If to look more deeply:
1. Pasting the case of the camera is present also another. For example, in a collection of DVDTechnik ¹ 201702, Type-1a, look
http://www.dvdtechcameras.com/collect/fed/fed.htm2. The serial numbers of FED were not used in the strictly certain sequence. And that an example cameras FED NKVD from your collections, which numbers recently were discussed. Look:
http://www.ussrphoto.com/Wiki/default.asp?ImageID=3779&ParentID=1&WikiCatID=98&ContentID=1035 Following reasonings Aidas, it is necessary to recognize them all as a fake.
3. The handles, as well as top plate of the case, could be used any of available stocks. It is not necessary to forget, that 1948 - year of the second year serial manufacture, after arrival of a factory from evacuation. Besides it was necessary to make the most part of adaptations for manufacturing details, again in connection with absence. And the Government demanded escalating manufacture of the goods for the population.
4. I have a photo precisely same FED NKAP with number 32158, acquired absolutely in the other end of the world. What, all manufacturers of fakes FED NKAP used close numbers and did not know the real order of numbers FED NKAP? Very doubtfully.
As you can see, the answers about authenticity sold on eBay of the camera, not so are unequivocal.
dmzi