RUSSIA - Germany. 1924 (11 July), registered cover from Moscow to Berlin, franked on reverse with Golden Currency 4k block of six and 2x7k issue. Foreign exchange 3k stamps applied - type I, with variety - broken second "S" in S.S.S.R. perforation 12 1/2 tied by official cachet, alongside Berlin arrival. Scarce usage of exchange stamp with overprint variety. (Photo). Est. 200 - 300 CHF.