5 r., horizontal pair tied by cds “ROSTOV VOKZAL 23 5 20” to reverse of registered local envelope with reverse several arrival cds inclduing the special three-triangle postmark “ROSTOV DON 26 5 20”, 10 rouble Soviet rate (1st weight step 5 r. plus registration 5 r.), fine. A scarce Soviet usage of the United Russia adhesives as Trophy
