Audemars Piguet

Hi everyone. I'd love to get your thoughts on a decision I'm in the process of making. I've been in the market for the older generation (39mm) Royal Oak Perpetual Calendar. After some time searching, I found an example that's a full set in the right confi...  

IMHO it's not a big deal as it's documented by AP and it comes with the paperwork. Maybe look at it as a point of negotiation with the seller? Might be tough as these are sought after and there are lots of variants. How does the price compare with similar... 

What is the diameter of that model? ... 39mm?

A real beauty.

I would expect a price discount of some amount to account for the non-matching movement numbers but if you plan on keeping, it wouldn't bother me in the slightest