1923, gold surcharge 5k on Imperial Insurance stamp of 5r in dark blue on pale blue network, perforation 12½, block of four with left stamps of type I, both right stamps have no accent over ''?'', top one has all square dots, bottom one - last dot in round-shape, in addition right stamps with vertical line of invalidating perforation, full OG, NH, VF and interesting block for a specialist, Standard Cat. #PE4A, Est. $150-$200 (Image)

1925, the third issue, inverted surcharges 5k on 1k, 10k on 3k and 15k on 1k, all with full OG, mainly LH, VF, Standard #PE6Ta-8Ta, Est. $250-$300 (Image)

1932-33, the sixth issue, horizontal se-tenant pair stamps with black surcharges 3r and 5r on 35k ultra, full OG, NH, VF, Soviet Philatelic hs on reverse, Standard #PE26-27 (Image)