Patek Philippe

so mates, I decided to empty my wallet again....going in for a 5056P......thank you thank you in advance Here is the little problem or rather a query to the owners and admirers.....I am looking at this movement 315/199 rite but I notice two things very od...  

My 5056P has the same on both counts and my local Patek service centre has also serviced it before so nothing to be concerned. This is a great pickup and I still like this watch a lot. When it comes to Annual Calendars, I think Patek sets the standard....  

where do you find the case# , since the 5056P doesnt come with a solid case-back, at least I never saw one being offered.

Whilst I have the 324 movement is looks very similar. The 'unfinished' wheel on that rocks back and forth with the movement of the rotor actually has a very fine sort of perlage finishing and is silver in colouor. I expect yours has the same finish. The s... 

I have seen lot of references here with 3-D layout of the movements......I am trying to find more info on this specific movement. If anyone has info on this plz share.

I see you have experimented with your piece....I never knew this could be done....thanx any idea where to find the case no since it doesnt have the solid case-back...

On watches with display back, the case number is on the inside of the display back:...  

No pictures of the back here's a recent one of the dial....