Set of 3 ornithology boards

Very beautiful ornithological plates of the editions kronen-verlag erich cramer. Quality printing with a very beautiful color rendering. The explanations from the back of the board were copied to be carried over to the back of the frame. The visible parts of the images are in very good condition, however the edges of the sheets are stained: this is why a paper pass has been affixed to ensure a homogeneous aesthetic reading. Dimensions of each frame: ht 27 cm X w 19 cm.