WWII Occupation - Serbia 1942 Postage Dues The second set of postage dues for German-occupied Serbia was the first to be designed specifically for the territory. Set Date(s) 10 January 1942 Watermark(s) None Album Page(s) 1942 Postage Dues The second set of postage dues for German-occupied Serbia was the first to be designed specifically for the territory. Set Date(s) 10 January 1942 Watermark(s) None Album Page(s)