To précis some web info & add a bit of my own: During the 1970’s Ulysse Nardin used ETA movements as a base.
In the case of the UN 36000 COSC Chronometers, the cal. ETA 2826 was used, and the reworked movement was designated cal. NB 11 QU. It features 25 jewels, a screwless Glucydur balance, a self-compensating flat hairspring, Incabloc shock resistance, and fine regulator adjustment by eccentric screw. The movement also features quickset date (pull / push of crown, like Omega) and hacking functions. According to the Ranfft website, only 1,000 of these movements were produced, & they were placed in a wide variety of case types and styles. The case measures 36mm (excluding crown), and features a nice contrast between the mirror-polished bezel, case sides & bevel and brushed upper lug finish. The screw back is brushed, unlike later versions that had a relief of the classic UN logo.
The star burst brushed dial gives a number of lovely blues under different light. The applied markers and hands both have contrasting white inserts. The UN anchor is also applied. The hands have a pleasing gradual taper. The crown also has a raised anchor with U N letters either side.
This is the only C case blue dial version I’ve seen or can find on the ‘net.
I’m enjoying it a lot, especially with the matching blue Perlon strap - very comfortable too.
Glad you like it too!
Cheers,