I recently inherited a Campagnolo Daytona short-cage rear derailler in nice condition. It's labeled "9-speed." Now, I know that Campy slightly changed the cable pull of their ergo shifters and rear deraillers between 2000 and 2001, and though the difference is small enough to not matter in practice most of the time, I'd like to know which year model this RD is. I don't have Campy shifters to test it on. And there is no model # on the derailler, as is usually the case with Shimano components. Are there any easy ways to tell? I've attached pictures in case there are any visual indicators. Thanks.