I don't see videos on the 5060a often but the watch shown for a majority of the video is either a 5066 or a 5060 with an 5066 case back added. Billy might have addressed this but I need to translate what he is saying to figure that out. The 5060 and the 5066a are almost identical; I believe the only difference is the case back. The only way to tell is to have Patek verify the movement serial number is associated with a 5060 vs a 5066. Beautiful watch!