The complete set in detail
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D027
SG No. 1067
1951 - National philatelic exhibition at Wuppertal : Watermark 'B, P and zigzag lines' - 10 Pfg. + 2 Pfg. ; green, black and yellow
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D028
SG No. 1068
1951 - National philatelic exhibition at Wuppertal : Watermark 'B, P and zigzag lines' - 10 Pfg. + 3 Pfg. ; lilac-carmine, black and yellow