Black and white. Gottfried Von Leibniz (1671-1694) calculator. Two crank handles, looks like wood, one is located on the left and the other in front/center. Next to front/center handle is an engraved plate (in German, hard to read). Located on the left corner of the calculator is an engraved number "56956". Center of image, above the center handle, is a line of switches. Machine looks metalic.
Verso purple stamp: " Wiederaabe nur mit dem Vermerk: Photo Deutches Museum Munchen Bildnummer: 72.3g"