The reference number 25721ST.O.1000ST.01 is a very early coveted example of the D series. The first few batches of Offshore perfected the complex watch and made several updates-difficulties in production caused the watch to be released in 1993 instead of on the real 20th anniversary in 1992. As you know, this D series example has quite a lot of bronze in 90s watches, this is because the D series batch used a slightly different and more unstable blue tone, which now provides us with this unique Purple tint. A bit of brass came out. Another unique feature of the D series is that the iconic mesh decoration is closer, which means that the squares on the dial are getting smaller and smaller. I think this is a more elegant aesthetic.