MI) 1921 RUSSIA, CERTIFIED COVER, HYPERINFLATION,  FROM SOVIET RUSSIA TO BERLIN, GERMANY, BEARING A BLOCK OF 20 RUSSIAN STAMPS OVERPRINTED TO A VALUE OF 250 RUBLES EACH (TOTALING 5,000 RUBLES). IT FEATURES A POSTAGE ERROR: MAILED ON OCTOBER 20, 1921, WITH 500 RUBLES IN POSTAGE APPLIED, WHEREAS THE CORRECT INTERNATIONAL RATE FOR A LETTER WEIGHING UP TO 20 GRAMS WAS ACTUALLY 1,000 RUBLES. DUE TO THE 500-RUBLE POSTAGE SHORTFALL AT THE POINT OF ORIGIN, THE GERMAN POSTAL SERVICE CHARGED A FEE OF 34 GERMAN PFENNIGS UPON DELIVERY; THIS AMOUNT IS CROSSED OUT IN BLUE PENCIL, INDICATING IT WAS SETTLED. VF.