Korea Chapter of “Senf Weltkatalog, 1915 issue”
Senf Brothers The Brothers Senf (Gebr. Senf) of Leipzig/Germany operated a famous stamp shop from 1874 and had an “all world stationery service”. From 1892, they issued the Senf stamp catalogs. They also used a small guarantee mark “Gebr. Senf” on the reverse of postage stamps they offered.
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