Prince Otto von Bismarck grappling with would-be assassin Ferdinand Cohen-Blind

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This is an image by an unknown artist illustrating the day of May 7, 1866, when Prince Otto von Bismarck directly attacked and defeated Ferdinand Cohen-Blind after he had already started shooting at the Prince.

This copy of the image comes from the ? website [Link Here], and is a trimmed down copy of a larger image. What the fuller image looks like can be seen in the following:

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This image is taken from the Wikimedia Commons website [Link Here]. Unfortunately, it's not easily available in a bigger size, and no one seems to know where the image originally came from.