My watch is C shapped with the day & date calendar, 751 caliber and knurled bezel, case back mentioned :168.019.
could you advise me about this, the true model is 168.019 or 168.029? ( the pictures as above mentioned). Any things if you see and doubt

Thanks you

 

@dsio @cicindela

Can you move the above questions to a thread of its own

 

Your watch should be 168.029

The caseback did not start life with the watch.

Never seen green in the hands before.