Thank you for assembling this information. Very nicely done. The first time I saw a 5170 was in Qatar (Patek AD was located in the Lagoona Mall back then) and it was the J. I was so thoroughly impressed with it's classic beauty, slim handsome case, incredible movement and overall panache - that I totally forgot that I 'thought' I wouldn't like it based on casual internet surfing prior to actually seeing it in the metal.