https://www.ebay.co.uk/itm/Universa...a=1&pg=2045573&_trksid=p2045573.c100033.m2042Purchases made through these links may earn this site a commission from the eBay Partner Network
In addition to the description detailing the reconstitution the seller says the dial is Marked "Universal Geneve Railrouter Chronometre Swiss". This is not borne out by the supplied pics

 

Perhaps the seller cobbled the listing description together from other, more original efforts - a bit like the watch!
I'd call it a franken. Though all the parts do go together, who's to say what dial design or case material/finish originally matched that movement serial? Movement should have been serviced before fitting too - it's dirty/covered with fibers

 

I'm pretty sure it's a Cal 1205

By a strange coincidence this re-appeared on ebay. Looks just like the "Franken" case and dial.
Btw the movement looks to be a 1205 and with the additional hacking mech. Did UG ever use that in anything other than the Railrouter?

 

What I meant by movement serial isn't the movement caliber - as far as I know all Railrouters had 1205 and 65 movements - but the additional number you see on chronometres etc. As there were a few different dials in Railrouters and stainless and gold plated cases, who knows what configuration the watch that movement came in had when first sold. It could have had a stainless case with a "Railrouter Chronometre" dial? The ebay watch is a lovely looking thing but it's a bitsa priced far in excess of the value of it's constituent parts