Unlisted in Hake although possibly listed as Sullivan 1864-12 which includes as part of his description "Unusually Large Portrait." While Lincoln's head is not shown particularly larger than on other items there is a great deal more of his entire upper body showing than is seen on most tin types. .75x1". Image is on the dark side but all details remain clear. NM luster on the frame. Item never had a pin and may once have been held to a carte de visite. Rare.