I would guess this is from 1865. His jacket is probably open because of the taper/cut of these coats were uncomfortable and frumpy when soldiers would sit.
2.5 x 3 in. The item "Civil War Confederate Soldier Man 1860s 1/6 Plate Tintype Ferrotype Photo H187" is in sale since Wednesday, November 17, 2021.
This item is in the category "Collectibles\Photographic Images\Photographs". The seller is "calamityphoto" and is located in Williams, Oregon.This item can be shipped worldwide.