DVR overprints. 7 on 15 kopeks brown lilac and blue (2x) together with Russia 3 kopeks red imperforate (2x) on reverse of registered cover from Vladivostok 5-5-1921 via Seattle to New York City and forwarded to Cambridge, Massachussets (USA), fine/very fine (tear at top, and some smudging at front, probably dried up bloodstains). Combined frankings of DVR overprints and Russian stamps are extremely rare!