i was going to buy a watch and chose between patek 3919 and Lange 1815
but it seems patek 3802 has a sweep second hand and date , 18k YG roter...and the price is not expensive as patek 5117.(seems quite closed to 3919)
what the normal price on patek 3802? 3919? and Lange 1815 in US$
(Taiwan market)
thanks
