Botanical board, Glasses or ophthalmic grass

Botanical board from geigy weed tables. These are boards with weeds for a manufacturer of plant protection products. Copyright from the 1970s. Very fine and detailed drawing. Very good general condition. Off-white background, photographs taken behind a white background. Plate 93.1 euphrasia rostkoviana (ophthalmic grass or glasses breaker). Dimensions: 29, 3 X 20, 5 cm. Postal shipment in letter followed in adapted cardboard envelope. Do not hesitate to contact me for any questions.