cover 1918 Surcharges on imperf values, 25k. on 1k., 25k. on 3k. and on perf. values 25k. on 2k., 25k. on 4k. and 50k. on 7k., the correct rate on 1918 (31 Dec.) registered envelope from Tagonrog to Rostov, scarce and attractive also surcharge inverted on imperf. 25k. on 2k. and 25k. on 3k. (2) and perf. 25k. on 2k. mint