The watch is a total shit show.
Movement should be a caliber 601, not a 600. The case MAY be a 135.011, if so it's seen a bad session on the polishing wheel.
The "Seamaster" has been washed off the dial by some heavy duty dial cleaning, I'm amazed they managed to keep the other markings.
As noted by
@hant26, the movement is filthy and missing parts and does not fit the case, even with the dodgy casing ring.
Before you waste any more of your time, educate yourself a bit by reading
this
You'll be in a much better position then and will be able to identify the good, the bad and the ugly.