Hi All. I recently purchased this truly nice Speedmaster. I went to change the date and it doesn't change at the first crown stop like I thought it would. The hour hand moves. I am wondering if that is how the date is changed on this movement? I don't know the movement #. I will be taking it in for a new battery tomorrow but, thought I could get a little insight regarding the correct movement operation. This appears to be a watch from the late 90's?????????? Wave face and back. Thanks for any help.