373rd Auction

1875, Coat of arms postal stationery card 4k. green with errounous inscription at bottom "Уравление", used, small corner bend/crease, otherwise fine

1906, essay for Imperial reply letter card 10k+10k blue (separated), contains two attached letter cards, size of each 174x106mm, one copy of such essay was presented to each participant of the UPU Conference of 1906 in Rome

1906, essay for Imperial reply letter card  without value in blue, contains two attached letter cards, size of each 174x106mm, one copy of such essay was presented to each participant of the UPU Conference of 1906 in Rome

1906, Issue 1896 essay for Imperial reply letter card 10 k. +10 k. blue, contains two attached letter cards, size of each 174x106mm, appropriately folded, sample presented to the UPU Conference in Rome, perfect condition, scarce,