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| 30.01.1969 - " Sericulture . " - six postage stamps. Artist: Stefka Goristanova and Vladimir Korenev (in a collective - group), Кратко описание: 1930 - feeding silkworm caterpillars ; 1931 - formation of cocoons; 1932 - cocoons ; 1933 - pupa ( beetle ) and cocoon ; 1934 - silk butterfly and cocoon; 1935 - silk butterfly and larvae . Of all brands - different moments of industrial processing of silk. Information about the publicationBK number: 1930, 1931, 1932, 1933, 1934, 1935,Nominal value: 1 Stotinka, 2 Stotinki, 3 Stotinki, 5 Stotinki, 13 Stotinki, 20 Stotinki, Perforation: for 1930, 1931, 1932, 1933, 1934, 1935 - Linear 10 3/4 Paper type: for 1930, 1931, 1932, 1933, 1934, 1935 - normal paper Printing: for 1930 - 3 000 000, 1931 - 2 000 000, 1932 - 700 000, 1933 - 400 000, 1934 - 220 000, 1935 - 220 000 Tags: Fauna, silk
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