the 5071 is an ugly, iced 5070 which costs 4 times the price of the 5070. Afaik only made in white gold with that black and dial 9 diamonds at 1,2,4,5,6,7,8,10,11 and a baguette at 12 o'clock
Probably the owner had a 5070 and a 5071 and swapped both dials. I want to believ you Radone but to be honest I would be surprised if it was done at PP, mostly they refuse these kind of modifications. And since it is just the dial, every good watchmaker can do the job