1924 5k on 3r Soviet Union, USSR, Russia, Airmail (Zag. 59 var, OFFSET of Overprint) (Image)

1924 10k on 5r Soviet Union, USSR, Russia, Airmail (Zag. 61 var, OFFSET of Overprint, MNH) (Image)

1924 3k+10k For the Leningrad Proletariat, Soviet Union, USSR, Russia (Zag. 63 Ta, Zv. 65v, INVERTED Overprint, Certificate, CV $800, MNH) (Image)

1924 For the Leningrad Proletariat, Soviet Union, USSR, Russia, Gutter Pairs (Zag. 64, 66, Zv. 66, 68, MNH) (Image)

1924 20k+50k For the Leningrad Proletariat, Soviet Union, USSR, Russia, Block of Four (Zag. 67 a, OFFSET, MNH) (Image)

1924 20+50k For the Leningrad Proletariat, Soviet Union, USSR, Russia, Strip (Zag. 67 a, Partial OFFSET, MNH) (Image)

1928 10k on 250r Philatelic Exchange Tax Stamp, Soviet Union, USSR, Russia (Zv. S15, Blind Perforation, CV $20) (Image)

1923 5r Agricultural and Craftsmanship Exhibition, Soviet Union, USSR, Russia (Zag. 3, Zv. 3, without Background, Imperforate, Canceled) (Image)

1927-28 7k The 10th Anniversary of October Revolution, Soviet Union, USSR, Russia (Zag. 204 Pa, Zv. 215d, Imperforate, Signed, CV $1,700, MNH) (Image)

1927-28 18k The 10th Anniversary of October Revolution, Soviet Union, USSR, Russia, Pair (Sc. 380a, Zag. 204 var, Imperforate, Canceled) (Image)

1927-28 14k The 10th Anniversary of October Revolution, Soviet Union, USSR, Russia (Zv. 217e, without Red in island Sakhalin, Canceled) (Image)

1929 10k The First All-Union Pioneer Meeting, Soviet Union, USSR, Russia (Zag. 226 B, Perforation 10.5, CV $170) (Image)

1929 10k The First All-Union Pioneer Meeting, Soviet Union, USSR, Russia (Zag. 229c, Perf. 12.25x12x10.75x12, CV $150) (Image)

1929 10k+2k Post-Charitable Issue, Soviet Union, USSR, Russia (Zag. 224 A, Zv. 227 A, Sc. B54a, Perforation 10.75, Certificate, CV $450, MNH) (Image)

1929 20k+2k Post-Charitable Issue, Soviet Union, USSR, Russia (Zag. 225, Zv. 228, Sc. B56a, Perforation 12.5, Certificate, CV $170) (Image)

1929-32 1k Definitive Issue, Soviet Union, USSR, Russia (Zag. 228 A, Perforation 10.5, Signed, CV $40) (Image)

1929-32 5k Definitive Issue, Soviet Union, USSR, Russia (Zag. 232 var, Perforation 12x12.25, OFFSET, MNH) (Image)

1929-32 5k Definitive Issue, Soviet Union, USSR, Russia (Zag. 232 A, Perforation 10.5, CV $400, MNH) (Image)

1929-32 10k Definitive Issue, Soviet Union, USSR, Russia (Zag. 234 var, Perforation 12x12.25, OFFSET, Margin, MNH) (Image)

1929-32 15k Definitive Issue, Soviet Union, USSR, Russia (Zag. 235 var, Perforation 12x12.25, OFFSET, MNH) (Image)

1929-32 1r The First Issue of the USSR Third Definitive Set of the Postage Stamps, Soviet Union, USSR, Russia (Zag. 243 var, MISSING Background) (Image)

1929-32 3r Definitive Issue, Soviet Union, USSR, Russia (Zag. 242, Perforation 12x12.25, CV $170, MNH) (Image)

1929-32 3r Definitive Issue, Soviet Union, USSR, Russia (Zag. 242, Big Brown Spot, Printing paint spill error, Perforation 12x12.25, CV $170+, MNH) (Image)

1930 2k The 10th Anniversary of the First Cavalry Army, Soviet Union, USSR, Russia (Zag. 251 var, Double Print in corner) (Image)

1930 10k The 10th Anniversary of the First Cavalry Army, Soviet Union, USSR, Russia (Zag. 253 var, Dot over 2nd 'C' in 'CCCP', MNH) (Image)