This is Red leather version of Moskva 5. No other difference from regular version.
About regular Moskva 5:
The only apparent changes in this camera from Moskva 4 are the engraving, the lens and the shutter. This camera was produced from 1956 to 1960. The case for this camera is made of brown plastic or leather marked Moscow 5. Interestingly enough some of these cameras have lenses that are not threaded for filters .