AUSTRIA FELDPOST ISSUES 1915 - 1918 MINT COLLECTION of 180+ stamps on pages, includes 1915 "FELDPOST" double overprints (15, most vals to 72h & 10k, 1915-17 set, plus 21 imperf proofs printed on both sides, 1917-18 set, plus perf 11½ set to 4k, 1918 unissued set (ex 1h, 3h & 80h), MONTENEGRO 1917 set, 1918 10h & 15h unissued vals, ROMANIA 1917 & 1918 sets, SERBIA 1916 20h & 45h inverted overprints etc. Lot 257 (M) [c]