This sale is for a near mint condition Brightscreen 20/20 Split Image / Grid Focus Screen for any Mamiya RB67 camera, complete with original box.
This is the Holy Grail of focusing screens – the most sought after screen of all. It has minimal signs of use, just a few very light marks – invisible in use and nothing that affects use at all. A very very rare screen. Not a Beattie screen but very similar in effect and quality.
It gives around 2 extra f stops of brightness in the viewfinder, and this plus the grid is perfect for any architectural / technical photography. You can find loads of information about Brightscreen screens in the Downloads/Miscellaneous section on my website. It will be very securely packed for shipping.