1968’ Rolex Day-Date 1803 Wideboy Silver Dial

The gold case back in 60-70's have 1-3 Hallmark depend on their production time: 1- 18k; 2- Queen head; 3 a balance weight with 750.
This one hallmark case was produced in 68 with 2 mil case, 
don't get confused people says 2 mil case are bigger than 1 mil, but I have seen enough amount of watches so that I doubt that is the truth, there are indeed unpolished 1 hallmark case that is as thick as 2. But indeed the 3 hallmark case is bigger as they were shaped close to the next generation 5 digits.
Box ❎
Paper ❎
Dial: Silver Tritium Wideboy dial and Hands 
Calibre: 1556 Automatic without Hacking, 40 hrs Reserve