1918 CSS PCDRC-7, CSS PCDRC-7 variety. 2 Domestic Reply Cards 1 1/2 + 1 1/2c in blue, and card with light grey blue imprint, different shade (2 images)

1918 CSS PCDRC-7, CSS PCDRC-7 variety. 2 Domestic Reply Cards 1 1/2 + 1 1/2c in blue, and card with light grey blue imprint, different shade (2 images)