1950's Merit Shooting Aids Brochure,3-3/8" x 5-3/4" closed and opens to 13-1/4" x 11-1/2".It features the Merit Optical Attachment,Merit adapters for Globe Front Sights,Merit Iris Shutter Peep Sight Discs,Merit Lens Disc,Merit Iris Shutter Master Target Disc,Merit Melting Pot and Merit Rim Thickness Gauge for .22 caliber ammo.All are priced.There is also a chart listing popular peep sights and the proper Merit Disc to fit them.No date or code,I believe it to be 1950's. Excellent Condition