Many thanks @chrisat When the Clean Daytona comes with the 4131 movement, does it always feature the updated dial with thicker subdials, or is it possible that the latest 4131 version still comes with both dial types?If it is with the DD4131 movement, then an amplitude of 260 is in the common range. For a SH4131 it would be a bit low. That said, without knowing the settings with which the measurement was made, and whether the movement was fully wound, the amplitude is just a a very rough indication.
You are ordering from Steve, so ask him whatever you want to know. He is a very reliable and trustworthy dealer.
I would say that this is a watch from a recent batch.