This is a vintage cast iron machine identification plate from the Missouri Pacific Railroad. It is labeled "M. P. Lines" (Missouri Pacific Lines) and features a blank space to be stamped with a specific machine number. These heavy tags were typically used as "check tags" or "tool checks" to identify specific tools or machines in railroad workshops. Measures approximately 2.75 inches by 1.25 inches. The item is pre-owned and shows signs of age.
