1925, 7k-40k, imperforated complete set of four used on maximum card picturing wood Mausoleum, two other stamps are presented, one of which is worker 1k orange with perforation 14 1/2x15, typo printing, all tied by Philatelic Exhibition FD cancellation ''21.1.25'', fresh and VF, Est. $140-$180 (Image)

1925, 7k-40k, imperforated complete set of four used on registered cover from the 1st All-Union Philatelic Exhibition in Moscow, addressed to Saratov, tied by special Exhibition date stamp, arrival ds is on reverse, mostly VF, Est. $150-$200 (Image)

1925, 7k-40k, perforated complete set of four, printed on thickened paper, nicely centered for this difficult issue, full OG, NH (20k and 40k) or VLH, VF, Est. $150-$200 (Image)

1925, 7k-40k, perforated complete set of four, used on registered air mail cover from Moscow to Paris, tied by Moscow ''24.6.25'' ds, ''Par Avion'' boxed violet marking and Paris ''27.6.25'' arrival ds on reverse, mostly VF, Est. $150-$200 (Image)