1934, Ilya Usyskin, 5k brown violet, perforation 14, unfolded block of four with horizontal position of watermark, full OG, NH or LH (top right stamp), VF (Image)

1934, Andrey Vasenko, 10k brown, perforation 14, part of neat Kazan CTO, excellent centering and intact perforation, full OG, VF and rare, K. Filobok certificate (Image)