Remington Model 31 Brochure,3-3/8" x 8-1/4" closed and fully open is 13-1/2" x 10-3/4".It highlights "New Features" for the Model 31-new trigger position,new take-down device and new action bar.It also features the "New Model 31L" along with the Models 31A,31TC,31S,31H and 31 Skeet.The back cover features the Remington Express & Peters High Velocity shotshell boxes.The code is "Form No.853 Rev.48".I believe it dates early 1940's. Excellent Condition with some light edge chipping on the edges