Principles of War: The Seven Weeks War 1866 a Campaign Guide by R. Clarke published July 1999. This was originally published as a supplement to the Principles of War Colonial Rules published 1995.
66 page ringbound A4 paperback book containing historical background, notes on the armies and weapons, with army lists and maps for the following engagements:
The transparent plastic sheet which is ringbound over the front page has suffered some UV discolouration giving it a yellow tinge, but this has not affected any of the internal content including the title page with picture. Otherwise, virtually as new.