hi I have a 1d mark III for sale. why do you want the serial number? it is mint or mint-, i really have taken care of it. i never had a problem with it, AF included. i am really picky about focus. i got a 7d as a back up and havent used the 1d for a while now and i think the 7d will do it for me. it has about 40k clicks on it. with all origional accessories, plus handstrap and extra batt.
Michael