1923, Agricultural and Industry Exhibit 1 r.-7 r., cpl. set used with RSFSR 10 r. and 100 r. (counted at 1 rouble each) on reverse, tied by cds. "MOSCOW 11. 9. 23" to registered envelope to Berlin, all paying the correct 40 roubles rate (tariff valid two weeks only), reverse arrival cds. Two stamps with small defects, of no importance given the great scarcity of those RSFSR-First USSR issue mixed frankings
