This is an update to a prior thread (which, in turn, was an update to a prior thread). In any event, here she is! I had seen the 5205R and the prior 5205G before, so felt comfortable ordering this model - but I nonetheless ordered it sight unseen. Have to...
As Patek invented annual calendar, this is the piece to own. An iconic 3-aperture design, blue dial, skeletonizd lugs, nice moon phase - this indeed is the most beautiful annual calendar. Enjoy!