3 1830′s lithographs of fish species nicely framed and matted

From the re-known German Naturalist’s Lorenz Oken’s 1830s series of books are these three period hand colored lithographs beautifully matted and framed. The mattes all have hand drawn colored line decoration and featured a burled veneer finish. The first litho is titled Lachse and the mate opening is 9.75×12.25 inches. The second is titled X.Zunet Wale and the matte opening is slightly larger at 10×12.5 inches. The last is titled grundeln and the matte opening is the same as the first at 9.75×12.25 inches. The frames are all the same size at 19.25×23.25 inches.
Frames and mattes are new and in excellent condition, lithographs have some spotting detailed in the photos.