This is the first I hear about the Robotron 1715 being developed in Russia. All other sources I can find say that it was developed and built in Eastern Germany (Robotron was an Eastern German company that developed a number of computers in the 80s). Even the russian wikipedia say so. Wikipedia says that even the U880 processor, a Z80 clone, was produced in East Germany.
https://ru.wikipedia.org/wiki/Robotron_1715
http://www.old-computers.com/MUSEUM/computer.asp?c=864&s...