Welcome to the Grumble, Pete.
I'll second* Sue's advice not to mount the photos. I would also suggest that you present them in a way that will make mounting an option for the buyer, should they choose to do so.
In other words, please don't stick anything to the back of the photo (like a label or tape) that would emboss through to the front if the piece were dry mounted.
And I probably don't need to mention that if you sign the mat, you should use a c/p quality board. Cuz you wouldn't want your name on something that, three years from now, will be faded and discolored, right?
Kit
*That Rebecca is just too quick!
[ 01-07-2004, 06:20 PM: Message edited by: Kit ]