Highly unusual CDV size tintype of two Union artillerymen in a moment of casual interaction, mounted on a carte-de-visite-sized card with the words “PATENT APPLIED FOR” along the bottom. The seated soldier prominently displays his kepi with crossed cannon insignia, clearly marking him as an artilleryman. He holds an open book in one hand and gestures with the other toward the standing comrade, who leans slightly forward in attention, hat in hand.

There’s a striking informality and realism to this pose—one that breaks from the stiff formality typical of wartime portraiture. It captures not just a likeness, but a moment, as if plucked from daily camp life. The checkered studio floor and plain backdrop suggest a traveling photographer or commercial gallery setting.