I recently acquired a cube puzzle which is clearly of Russian origin.
Russian cube 1.JPG [ 196.56 KiB | Viewed 931 times ]
Russian cube 2.JPG [ 183.48 KiB | Viewed 931 times ]
Russian cube 3.JPG [ 186.89 KiB | Viewed 931 times ]
It resembles two similar puzzles in the database which are referred to as cubes from Leningrad.
Leningrad cube 1.jpg [ 33.1 KiB | Viewed 931 times ]
Leningrad cube 2.jpg [ 26.87 KiB | Viewed 931 times ]
The logo, however, fits the logo of Russian cubes of
PRODUCTION ASSOCIATION "HIMPRODUKT" of the Aksai Rostov region.
Production Association Chemicals of Rostov (region Aksai).jpg [ 51.41 KiB | Viewed 931 times ]
Does anyone know more about these cubes?