In 1959, the beloved 1800 watch family was introduced. The 1803 is probably the most popular. The watches originally came with the Calibre 1505, but were replaced by the Calibre 156 in mid-1960s, which had a higher vibrational speed. According to Rolex legend, only six steel 6611 timepieces were produced in 1959. The fact that only six steel 6611 watches were made in 1959, despite the existence of other steel models, makes them the Holy Grail of Day-Dates. It's not clear if these were models produced for commercial use or if they were prototype watches that found their way onto the market. There is no definitive answer, but I tend to think it was prototype watches made for internal use that eventually found their way onto the market. In 1969, Day-Date introduced a "concealed closure" to their President bracelet.
In the 1970s, Day-Date made significant technical advances. The Ulysse Nardin Replica Watches of the Day-Date was equipped in 1972 with a hacking function that caused the seconds hand to stop when the crown is removed. Around this time, the watch was fitted with a sapphire glass. In 1977 a new Calibre 30-55 was installed on the Day-Date and the reference number for the watches increased by one digit, 18xxx.
The Calibre 3055's main advantages were its 4 Hz vibratory speed, which provides better protection against micro-shocks. It also has a quick-set date function. Before, the only way to change the date or the days of the week was by rotating the central hour- and minute-hands through the calendar cycle.
Rolex launched its own jewelled and decorated quartz Day Date Calibre 5055 in 1977. This was used for the Oysterquartz collection. The watches were produced until 2001.Longines Replica Watches As the proud owner of an example in yellow gold with a burl wood dial I can say that it's a special timepiece because of the unique case and bracelet design, and the exceptional movement.
Day-Date ref. 19019 Oysterquartz
Rolex introduced the Calibre 3155 Day-Date in 1988. It was a revolutionary model, as it featured a double quickset for the first ever time. The crown could be used to quickly set the date and the day of the week, regardless of the minute and hour hands. The reference numbers of the model were 182xx or 183xx, depending on whether it had diamond-set case.