some time ago I found this nice FED-KMZ. The camera looks very good, has old 'MOCKBA' lens, the shutter goes to 1/1000, etc., BUT there are some details, that make me doubt about the genuine. For example, serial number 00077 does not fit to the year of production 1947 (?! there were produced some first cameras at the end of 1947, but not with s/n 00077, I think), black body covering has NO screws.
Fake?! Do you have any ideas about this?

http://www.ussrphoto.com/UserContent/512010_FED-KMZ-001.jpg

http://www.ussrphoto.com/UserContent/512010_FED-KMZ-002.jpg

http://www.ussrphoto.com/UserContent/512010_FED-KMZ-003.jpg

http://www.ussrphoto.com/UserContent/512010_FED-KMZ-004.jpg
Regards, Alexander