The complete set in detail

ZSO37C
Sc. Nr. 14NB13
West Saxony : Leipzig fair, without watermark and smooth gum, perforated - 3 Pfg. + 14 Pfg. ; violet

ZSO38C
Sc. Nr. 14NB14
West Saxony : Leipzig fair, without watermark and smooth gum, perforated - 12 Pfg. + 18 Pfg. ; grey-blue

ZSO39C
Sc. Nr. 14NB15
West Saxony : Leipzig fair, without watermark and smooth gum, perforated - 24 Pfg. + 26 Pfg. ; orange-brown