There was somebody selling that UG model for most of 2013 on Ebay - with just a very poor stock photo from an old catalogue. My request for extra photos was met with "No thanks!" so I told him to stick it up his helium release valve. My memory may be faulty but I think he was asking either $600 or €600 - obviously it not selling may be more to do with his attitude and the same watch with a different seller might have flown out at that price.
I quite like the watch, particularly the arabic numerals, but it doesn't tick the boxes of the typical vintage UG collector on here, I suspect. This is not a criticism.
The watch from 2013 was being sold by a seller called darcif72 and the Item ID was 310754245663. I can't find any mention of it with google but I'm not very good at trawling web archives - others may be better.