cover 1886-1936 XU5, cards and pieces (3), a selection showing "Doplatit" (To pay) marks (10, including Moscow, Riga, St. Petersburg-Riga (in red) and strikes in blue and in violet; Warsaw split circle collection marks (5), "Ultra" marks in black and in blue, and a few Instructional cachets; mainly good to fine though a few with faults. (23)