Original vintage lithographic plate butterflies

Original double-sided lithograph from 1922 on butterflies (available several plates published in Paris between the end of the 19th and the beginning of the 20th) original, magnificent blue monochrome on one side and colors on the other. Original and not a photocopy from an old one as we see a lot on Bristol! 42x29.7 cm, the included mat is a huge part of the enhancement of your image in the frame. Old document in good condition for its age.