How to know if black bay is ETA OR SELLITa?

[Gary Busey]

Hello,

Any way or knowing if a heritage black bay (41mm) is eta or selliTa?
All I know is that it was sold by the AD in 2021….

Tks


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[X E L O R]

Won’t be either if sold in 2021! The all moved to in-house movements in 2016/7 unless it’s very old stock and has the Rose logo on the dial


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[kieselguhr]

Are you talking about the smooth bezel BB41?

If so I believe 2020 and up use Sellita equivalent of the ETA 2824-2 which would be the SW-200. Regardless, Tudor modifies the 3rd party ebauche with their own parts as needed and regulates it to their standard.

[Gary Busey]

Originally Posted by kieselguhr

Are you talking about the smooth bezel BB41?

If so I believe 2020 and up use Sellita equivalent of the ETA 2824-2 which would be the SW-200. Regardless, Tudor modifies the 3rd party ebauche with their own parts as needed and regulates it to their standard.

Correct the smooth bezel!


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[Tikandtokalot]

Any Tudor with the smiley face was always the ETA 2824/2 modified movement at the time I bought mine it said so on the Tudor website.
Don't know if anything has changed since then.
I did hear that ETA was limiting supply to other makers though.
Edit
I've found this info online and hope it's ok to quote.
SO WHICH ONE IS IT.. ETA OR SELLITA?
Which one you get may be completely random. If true, this wouldn't be the first time we've seen
watch brands slap their own caliber number over a 2824-2 or clone and consider them one in the same (pro-info: they are not exactly one in the same as not all parts are completely interchangeable, but close enough). Why do brands pull this? Because it depends on the supply they are able to get
their hands on, especially since ETA movements became unavailable in early 2020. If your T600
powered watch was manufactured before 2020, it likely has the ETA.

Link to website
https://calibercorner.com/tudor-caliber-t600/