This bookmark was made in the US by F. F. Pulver Co, of Rochester, NY in 1904. It is a celluloid advertising bookmark for Fairchild Bros. & Foster for their Digestive Ferments products. The top is a picture of a butterfly. The back says "Panopepton, Fairchild's essence of Pepsine, Peptonising Tubes, Peptogenic Milk Power, Enzymol, Lecithin."