As has been stated before (http://omegaforums.net/threads/space-compax-how-many-versions.3589/#post-46212), there are fake Space Compaxes circulating. Now one comes up for sale on german ebay: http://www.ebay.de/itm/UNIVERSAL-GENEVE-SPACE-COMPAX-TAUCHEARMBANDUHR-VALJOUX-72-STAHL-/231090068328 This might be a nice occasion to post some comparison shots and enumerate the differences. I'm using my second execution for comparison, mostly because I don't have attributions for a lot of the images in my collection, so feel free to add your images as well as your comments and observations CASE: Fake: Real: Commentary: Real case has no chamfers along the edges and no bevels on the lugs DIAL: Fake: Real: Commentary: Overall quality of the fake dial is poor. Hour markers are shaped differently. Real dial has no tachymeter. Subdial numbers are oriented radially on the real watch, and the hands are fat, consistent with the pattern on many late UG Compaxes and Tri-Compaxes. This last feature is not consistent however. Real second sweeper is oversized with lume insert Hour and minute hands are tapered and consistent in design with late UG Compaxes and Tri-Compaxes. CASEBACK Fake: Real: Commentary: A diver on a space watch? Amusing Real one shows correct pattern for UG reference and case numbers. Correct Space Compax reference is 885104/01 and 885104/02 INSIDE CASE: Fake: Real: Commentary: Fake uses the "gear wheel" UG logo, which was phased out in 1953, well before the Space Compax was introduced, and does not have the brevet number. Oddly, the stamping is better aligned. MOVEMENT: Fake Real: Commentary: The movement is a Valjoux 72, but is the bridge is not restamped with UG's internal renaming of the caliber (cal. 85). The import code is hard to read, but looks like OZO. UG import codes are HON, NGH, or most commonly UOW. Also US-imported UG calibers are often stamped 'seventeen jewels unadjusted' where the fake one has "SWISS"