Über die spezielle und die allgemeine Relativitätstheorie:

Braunschweig: Friedrich Vieweg, 1917. Ninth printing. Acceptable. 23 cm; iv. 79 pages. Three figures in text, along with numerous equations. In original printed wraps. Acceptable only, with paper peeling from the spine and sewing tender. Paper cover is completely detached in front, and hanging by a thread in back. The pages are yellowed. There is an ownership autograph of one E. Bodländer. That said, a clean, unmarked copy in original state.

The original German edition of Einstein's epoch-making "On the Special and General Theory of Relativity.