Raddave, the reason why I asked about this movement is because I couldn't really see the number stamp where I've usually seen the 2846 on other movements.
the plates and the bearings look right , and the screws look a little chewed up, not something i would expect on a clone, plus as you state you cant see the 2846 on the plate, but in that same pic you really cant see the MIDO on the rotor , which leads me to think it the lighting ....
The machining on the mainplate leads me to believe its real ....