Postally unused but with handwritten ink note across reverse. French title on the front: " Great Week of Aviation - Souvenir. Effimoff carries the first paying passengers in his Sommer biplane." Very good condition.
Postally unused but with handwritten ink note across reverse. French title on the front: " Great Week of Aviation - Souvenir. Effimoff carries the first paying passengers in his Sommer biplane." Very good condition.
