DVR overprints. 1 kopek imperforate, 2 kopeks imperforate, 3 kopeks imperforate, 4 kopeks, 7 on 15 kopeks and 10 kopeks on 3,50 rubles on registered overfranked philatelic cover from Vladivostok 1-2-1921 to Dresden (Germany) with written Via America and opened by the German authorities, very fine and signed Mikulski