JNF/Jewish National Fund/KKL Germany issue 1916 Zionism Pioneers stamp book pane

JNF/Jewish National Fund/KKL Germany issue 1916 Zionism Pioneers stamp book pane
JNF/Jewish National Fund (KKL) stamps & labels: Germany-Cologne Head Office issue, 1916 Pioneers of Zionism series undenominated 2 x 3 stamp booklet pane, brown on brown paper, with left-most vertical perforation missing (Kap 64-69/Roch 50-55); MNH & OG, firm paper not folded or bent along the perforations.