A heap of UG's (and other nice watches) have been listed here http://auctionata.com/intl/s/182/a-hundred-years-of-chronographs-november-2014
I especially like the Longines chrono with valjoux 726. Valued at EUR 2400. Then I noticed in the description that they estimate it to been built around 1950, despite that it says in the caseback 3 patents from 1966/67 plus a ref year of 1969 After that I didn't believe the evaluation to be especially accurate anymore The Breitling 817 is a rare bird too. Breitling's version of Lemania's SwAF chrono
Wrong bezel in this Breitling E.I. and different dial from Lemania Sweden AF, look better the numbers GIGI
If these guys want to be taken seriously, they need to hire a better photographer. Too many of the images have unacceptable glare or are overexposed. the option to download higher-resolution images wouldn't hurt either.