mac_omega
1375
The crown is wrong...
The crown is a wrong replacement. You can see it by the different colour, it looks like chromium plated and not steel.
And it protudes too far. An original crown must sit flush to the case. These crowns are very hard to find as I experienced myself.
I have a disco volante with cal 30 T2, same case design but different movement. It also had a rwong crown when I bought it and it took me several months to find a correct one.
See how thin it is and it sits flush with the case.
Want to add: the watch of Bulang most probably also has a wrong minute hand, it is too thick: And the hour hand has lost its tip - maybe clipped off?