Challenge: help me find the lowest serial 5 digit reference chrono

[Mark020]

Currently doing research into UG (& derivatives) chrono's with serials up to 1 mio. I have found & recorded details incl. a picture about 1350 so far (and counting).

The lowest 5 digit serial I now have found is a ref 12202 with serial 718.406. I would have guessed before that ref 12201 was produced first but the only one I found so far has serial 795.544 so probably produced months later.

The challenge is:
- UG or derivative (i.e. Jaeger, Zenith, Girard P, LeCoultre)
- Chronograph
- 5 digit reference

Edited: Jan 27, 2024

 

[Mark020]

One remark: I need at least the first 3 digits of the serial

 

[martinc]

I can’t beat you.
Lowest 5-digit reference I have is a 740xxx. Reference 22408. Next ref. 22102 743xxx, then a 22207 at 744xxx.
Anything that I have with serial in range 700xxx to 730xxx is a 4-digit ref.
(But I also had a 4-digit 769xxx Uweco)

 

[charlitos]

No sé si puede valer la pena.

 

[Mark020]

(please post in English ;-))

Nice watch but no 5 digit reference!

 

[charlitos]

Sorry, translate automatic.