Removing red mark from B&W photo
I have some black and white prints that have been photographed in color. There is a prominent red stamp on the image and because of where the stamp is positioned it is impossible to clone the red stamp away. How do I isolate the red so that I can easily remove it? I've tried converting it to LAB mode and then making the lightness and A channel not visible which does remove the red but I cannot save it. I know this will probably be a simple thing to do but I'm lost, please help!
Mark