Hi Mazoue
Many thanks for your inputs, which are greatly appreciated. I'm finding this research interesting as I don't do a lot of it usually and have some thoughts to see what you think (and anyone else). Thanks in advance for any responses but, I'll put some case and back photos up when I'm back at the bench tomorrow if you prefer to comment then.
I see what you mean that this seems a bit early for this model but am sure this is the right case back. It's in the correct range for a calibre 215-9 but I see that the 2.0 to 2.1 million numbers are usually indicated as 1959. I know there is some leeway in those serial charts and that might be the reason for this so, I'll advise my customer to try contacting UG.
I thought these aspects were odd but, just sat down and finally found the
@CafeRacer site which is easy if you click on his avatar... it is here for anyone wondering like I was -
https://universalgenevepolerouter.com
He has a pair of adverts there
at this link - both of these are missing the "Polerouter Sub" text on the dial although, the right hand one has it in big letters at the top of the page. I wonder if the first batches didn't have this writing as leaving it out would be a major omission from the advert for me.
There is also the comment in French beginning "La seule montre...". I translate this as "The only watch with a luminous index on a rotatable ring". For me, it says that there is only bezel lume on the triangle and not the low numbers as we would usually see. The illustrations certainly don't appear to show any lume on the numbers either. I'm inclined to revise my comment above about the bezel triangle lume possibly having been added later, as I now think it's original.
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Neither of those adverts show the small lume dots but, that doesn't particularly surprise me. I understood from Lou's text that he regards the Tiffany watch as second generation and, as you point out, the lume is completely different so, I wouldn't read anything across from that. The full lume remains an anomaly at the moment - I wonder if the early batches had this variation and the missing "Polerouter Sub" text - I'll dig around but am not likely to find anything you won't have already seen.
Many thanks for your help with this - it's an interesting discussion. A few other things to do this afternoon/evening so I might miss any responses until much later.
Best regards, Chris
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