A great Patek! I'm usually not a fan of two tones, but I happily make an exception for the 5980..I recall they offered one when I picked up the 5131P in Milano and it was veery tempting..;-)
This has always been my favourite patek ever. I am a big fans of two tone watch, tt sub, tt 5980z Hopefully patek will release a tt 5990 blue dial. HAGWE! ...