I really love the small crown Subs and a "red" 6536 is about as good as it gets.
However, I no longer feel expert enough to judge the originality of a dial these days. Reprinted dials have become just too good.
I mention this because I am a bit uncomfortable about the rectangular markers on the dial. They have a slight "serif" which is usually a sign of a reprinted dial.
I welcome any expert to prove me wrong. At any rate, the watch looks fantastic!