Your note is interesting – but also confusing. As I wrote earlier, this part of Omega’s history is not clear to me.
‘T1’ is the first transformation – from the original movement. The 28.9 CHRO T1 is to be found easily – but what is the original which led to the transformation? As I wrote, I think the OP’s watch is the original. To support that, the Extract from the Archives does NOT show it as a T1 – I think this was the first 28.9 CHRO.
So it is surprising to see Marco Richon describe it as a 28.9 CHRO T1. Sadly Marco died 2 years ago so we will never know. With no disrespect, I feel this is an error: the OP movement is (in my opinion) not a T1, I think it must be the original movement, probably as in the Balbo (and that would need confirmation from Omega).
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