MTF
421
Case is 39mm but highly curved so >>
actual diameter available for movement is snug. Movement may be around 35 mm diameter which makes the Unitas more likely; 17 jewels though.
Help! I respect both Stephen's and Marcus's opinions but need definite i.d. 
MTF
What's this watch? (teaser photo)
I showed it to Herr Schnyder once but no details were forthcoming... he was distracted by a Freak promotion at the time Is it a UN? What year of manufacture? How many were made? [OK, at least 2 made ] What is the movement? Who made the case?...
What a beauty! Personally, I am clueless, however ...
How large is the watch? At fist sight, I thought the movement's base could be a Unitas 6498, but the two wheels of the winding system (crown and locking wheel ?? - sorry, don't know the correct English terms) are in a different location. Also possible (de...
I think it is an UNITAS 6497, the Savonnette version of the 6498 (Lepine), finish.
seems to cover aesthetics and function (pallet stone on screwed plate). Nice watch! Regards, Magnus
UN 276-022 >>
I have limited information as we got the first watch (#5) back in 1999 without any knowledge about UN. We asked no questions because we did not know what to ask. My wife liked the elegant dial with blued Breguet hands and painted black Breguet numerals. T...
Here is a scan of the ETA UNITAS 6498-1 for comparison..
scan is from ETA's web-page: Looks pretty much the same, doesn't it? Regards, Magnus...
Movement identified ...
... I hope so, at least. At first sight, the movement seems to be a Unitas 6478, the well-known pocket-watch movement, which has been hurled into a renaissance by Panerai. However, close inspection of the pictures reveal that the winding mechanism is diff...
I have 21/25
Sold only via Harrods in London, only 25 made, 18ct gold case, 17 jewels but otherwise I know nothing more.