Pictorial Envelope: 1 envelope; 2 5/8 x 4 3/4in. A plump figure with a naval hat on sits atop a wooden horse with a spyglass in his hand. Cream envelope with black ink. Image on left side. Printed above image: 'A 'Horse Marine' of / the C. S. A.' Printed vertically at left of image: 'Wm. Ridenburgh, 140 Nassau St N. Y.'