And this is my old 5134G.
I bought my 5134P in the original unopened packing (double sealed) with "open" papers. So those are available because I bought my watch some 13 years after it was originally sold.
So people say that the movement is too small... No comments on that. For me the movement is great, so is the complication and 5134 is one of the nicest Calatrava. I have more than a handful or two Patek Philippe watches and 5134P is without any doubts one of my favourites. It's a great watch - just go for it!
Best, Kari