This lens filter is a yellow filter from the Ingento Color Filter Series A made by Burke and James of Chicago. The lens filter come in its original box with a narrow purple ribbon for lifting it out of the fitted box. The round box is made of faux leather with a purple velvet lining so that the lens filter is not scratched. The lens filter measures 1 3/8 inches outer diameter. The front of the metal rim of the lens filter is imprinted with "The Ideal Ray Filter Burke and James Chicago." The side of the metal frame of the lens filter is marked Ingento Color Filter Series A. I believe that this is for a large format camera. The filter is in very good condition without scratches.