Describe what you collect in ordinary language, or search by country, date, Stanley Gibbons reference, description and classification. An abbreviation for watermark: a design or pattern incorporated into the stamp paper during manufacture.
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Lot 11357
Hong Kong - Postage Dues PD
Related lotRelated to Lot 11356 · Same country / area · Similar period · Same classification
Used collection on leaves(41) including 1923-34 wmk upright and wmk sideways sets, mainly fine
Philatelic terms
wmk — Watermark
General philatelic guidance — separate from the UPA catalogue description.