This beautiful mushroom study is likely from a German encyclopedia of the 19th century filled with chromolithograph prints. This process of printing was used from 1855 - 1905 and requires each color represented in the image to be applied on a separate plate. The colors layer translucently upon each other. This one is called Agaricus Bellus and is initialed MFB. It is plate 175.
The paper measures 5 3/4(w) x 9, but the print itself is 4 1/2 x 7 1/2. It is most excellent in condition with no stains or creases. The outer border of white is very lightly aged. There is a white dot area just to the center of the print, but I feel no roughness and believe it was a skip in the printing. The pictures show this well, so you can decide.
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