This sale is for a boxed, mint condition standard matte screen for any Mamiya RB67 camera. This is the standard screen supplied in all new RB67 cameras.
This screen is unmarked, is boxed (although in the wrong box and the box is a bit battered), and has no signs of use. It was probably pulled from a new camera and swapped with the screen originally on the box.
A superb screen, very hard to find now – most are covered in scratches. You wil not find another unmarked example in a hurry.