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In the 90s,which is when the 1st offshores were released in the market, model was extremely unpopular. That's why only 64 examples sold of the 25721sa. On top of that, people didn't seem to like the gold bezel as it had a different alloy mixed back then that helped turn gold color copperish and people didn't like. People swapped bezels for steel ones. So out of the 64, they started disappearing. Hodinkee explained in article only of knowing 4 of existing in the market, doesn't mean only 4 total exist currently in its original form. Impossible to know so you can only go by what's out there. 64 watches on the course of 25+ years is very likely that over 50% won't exist anymore. Stolen, damaged, parted out, lost, modified etc.
It truly is a rare watch and if you saw one for sale it's one of a kind. I saw one on ebay but it's watch only and looks beat up. Something like this should be a full collector set. My opinion

The 25721SA is the first example of a Royal Oak Offshore exhibiting two tone configuration. It is a standard beast, however the bezel is supposedly 18k yellow gold. The bracelet does not contain any gold interlinks, making for a strange appearance, but a ...

I checked the AP Chronicles' page

By: quattro : December 17th, 2024-05:00

and what they say is so accurate (year by year sales from 1995 to 1999) that I would tend to rely on it. That only 10 or less than 10 have surfaced on the market doesn't seem unbelievable to me. It would just mean that 50+ owners are happy with this watch...

I think I like it...

By: mdg : December 17th, 2024-05:20

Maybe because there is a big difference between " made " and " resurfaced ", which is a common phenomenon in the vintage world.

By: amanico : December 17th, 2024-06:26

For example, the Tornek Rayville: Around 1100 were made. How many survived? A bit more than 100? Maybe not even 100?

"Known to market" verbiage

By: sgfrkk96 : December 17th, 2024-13:33

I guess you are right, the verbiage makes a difference. This hodinkee article mentions "only 4 known to market" when talking about the 25721SA. www.hodinkee.com I got frustrated because the guy selling on facebook said "only 64 ever sold and only ...

By: sardilletrf : January 27th, 2025-19:50

interesting!

By: sgfrkk96 : January 30th, 2025-15:11

I appreciate the knowledge - I never considered some people may have gotten them and then swapped the bezels out after they had tarnished, or maybe just ended up not liking the differing metals. Crazy. I wish I had a little more money to comfortably just ...