I don't believe anything is "wrong" with the movement (assuming the chrono sweep-seconds and minute counter start/stop/reset correctly). The continuous sub-seconds is not common on most stopwatch movements. From your images, the continuous sub-seconds hand is mounted on the lower 4th wheel pivot (extended thru the dial as a post)...this is the normal arrangement for sub-sec hands. There does not appear to be a hacking mechanism...nor should there be...it would serve no purpose in the absence of hr/min hands and would contribute to an inaccurate stopwatch function. For the stop-watch function, minutes are read from the minute counter and seconds/tenths are read from the chrono sweep-seconds hands (which start/stop/reset). In this case, it appears that the sub-seconds just affirms that the watch is running...kind of nice to see that the watch is powered up and train is moving, even when the stopwatch function is not in use. With a caliber reference, this can be confirmed, of course. Regards, BG