Coat of Arms 1 ruble brown and orange in block of 4 on reverse of censored registered express cover from Omsk 29-10-1919 over San Francisco to Frankfort, Kentucky (USA). Part of the rate (6,50 rubles) was paid in cash (rectangular cachet in blue on front). This letter was offered several times but it was never claimed by the addressee, so finaly it was recorded in the Dead Letter Office on 20-3-1920, fine/very fine