Set of 2 botanical boards Geigy

Botanical plates from geigy weed tables. These are boards with weeds for a manufacturer of phytosanitary products. Copyright of the 1970s. Very fine and detailed drawing. Very good general condition. The edges are very slightly yellowed but it is extremely discreet (see photos). Off-white background color (photos taken with a white background). Boards in the same color tones (great nettle, common hogweed or bear paw). Dimensions: 29.3 X 20.5 cm. Shipping in suitable rigid cardboard envelope. Do not hesitate to contact me for any questions.