1929, "Kniga - Pochtoi" (Book by Mail), label in black and carmine, worker (2nd definitive issue) of 10k brown is affixed over, postally used, mostly VF

75.00

1929, "Kniga - Pochtoi" label in black and carmine with worker 10k brown, used on reverse of cover from Kiev to Nizhni-Novgorod, tied by Kiev Train Station "26.2.29" postal marking, machine arrival ds, mostly VF

250.00