Black 8K surcharge on 1925 7K "1905" Stamp (SU 303A)

8 k 1927

USSR

Surcharge on Sg:SU 464b - overprinted in black - (8 КОП.)

Surcharge 8 kop

Red 8K surcharge on 1925 7K "Popov" Stamp (SU 300)	Black 8K surcharge on 1925 7K "1905" Stamp (SU 303A)	Black 8K surcharge on 1925 7K "Decembrist" Stamp	Black 8K surcharge on 1926 7K "Esperanto" Stamp (SU 311A)
Black surcharge on 1925 Postage due 1K stamp (SU P11IA)	Black surcharge on 1925 Postage due 2K stamp (SU P12IA)	Black surcharge on 1925 Postage due 3K stamp (SU P13IA)	Black surcharge on 1925 Postage due 7K stamp (SU P14IIA)
Black surcharge on 1925 Postage due 8K stamp (SU P15IA)	Black surcharge on 1925 Postage due 10K stamp (SU P16IA)	Black surcharge on 1925 Postage due 14K stamp (SU P17IA)