1943-49 (c.) extensive and specialised collection on leaves with duplicated Japanese Occupation of Java, Sumatra 1943-44 with part sheets, overprints on Netherlands Indies, Japanese Naval Control Area overprints, a selection of local Japanese Occupation overprints; Indonesian Republic overprint issues and issued stamps in singles and multiples with a few covers; a very large section of the unlisted pictorials in singles and multiples with imperfs., booklet panes and errors. Condition is generally fine to very fine making a remarkable collection. (many thousands)