Civil War-Date Autograph
Signature & Rank, “John F. Reynolds, Brig[adier] Gen[era]l Vol[unteer]s,” on a 1” x 3” portion of a larger document, dated “1862” in an unidentified hand at lower left.
An excellent early-war example, with the rank Reynolds held from August 20, 1861 until promotion to major general, effective November 29, 1862.