I think this is a Clipper of some kind, and these pics don't do it justice, it is a good looking watch. I don't think it has ever been serviced, there is no indication that anyone has ever opened the case, in fact, it was a bit of a pain to get it open due to age and corrosion. There isn't a mark on the movt anywhere to suggest it has ever been touched, a bit concerning, considering it appears to be well worn. Bracelet as recieved is a half expansion JB Champion that looks like it might be original? It will get the full CTR and polish, and I should mention that the bezel does not have any texture like on some clippers of the same period. It is simply a polished stainless case. It is difficult to make out in the pic, but the dial says 'Automatic'.
I think the image used in these adverts is exactly the same. It's position differently in each one but it's the same. I'm not sure it says automatic in the ad but both watches are self winders.
I'm going with the crowd but truth is, it could be either watch by my means of reckoning.
Jet Clipper AC