RUSSIA. Group of Mint Sets (10 Sets), 1973-87. Leningrad Mint. GEM UNCIRCULATED.An alluring lot of mint sets from the Leningrad mint, this arrangement features 1973, 1976 (2), 1977 (2), 1978 (2), 1979 (2), and 1987. The first is only in its original cellophane, and the last is in its original yellow cardboard case, while the remainder come in date pairs of yellow cardboard and red faux-leather.