The complete set in detail

RDB01
SG No. O90
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - grey ; 2 Pfg.

RDB02
SG No. O91
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - bistre ; 3 Pfg.

RDB03
SG No. O92
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - green ; 5 Pfg.

RDB04
SG No. O93
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - carmine-red ; 10 Pfg.

RDB05
SG No. O94
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - ultramarine ; 20 Pfg.

RDB06
SG No. O95
1905 - Official stamp for Baden : Diagonal inscription 'Frei durch Ablösung Nr. 16' - red and black / yellow ; 25 Pfg.