These are in the original box marked "For Kodak VCB subtractive filter assembly csm Part no. 573134". Cyan filters lighten cyans while making reds darker. The filter is 1-11/16" diameter mounted in an aluminum housing 4-7/8" long x 2-1/8" (at it's widest point) and has three 1/8" holes for mounting or attachment near the bottom. New old stock. An Eastman Kodak collectible! VERY RARE!
