Lithograph, old botanical poster

Vintage botanical poster from the Langlois printing house. Since the poster is old, the colors may be slightly faded. Given its age, this edition is unusual. The frame is a glass panel held together by kraft paper on the sides and back. The paper is peeling in places, and I note a tiny hole in the poster, visible in the last photo. Dimensions: 31.5 x 23.5 cm.