Charles Darwin’s unread copy of Marx’s Das Kapital restored for display

It’s June 1873, and Karl Marx has decided to send a copy of his magnum opus, Das Kapital, to Charles Darwin, and 150 years later, that unread copy is going back on display at Charles Darwin’s home.
However, it seems that Darwin wasn’t that impressed with Marx, and not only did it take several months to send an uncharacteristically short thank-you message, but it’s likely that he stopped reading the book after just a few chapters.
The clue is in the printing technique of t