My browsing showed this little 145.012 on Ebay. All images are from the listing and I have no connection. At the time of writing there is three days to go. See the listing here
I used to enjoy buying speedmasters in this state, but the prices have risen strongly and the risks are quite high now.
This watch is presented without a bezel and missing a pusher cap. The dial plots seem very white from the photos and the handset seems vintage and correct. The crown is not. The bracelet is scrap.
When considering a watch like this, the first thing is to wonder how damaged the movement is from the missing pusher. Sometimes this can allow moisture ingress that over time causes damage.
Well the photos are not the best, but we can see there is no serious corrosion. We can also see that although the seller describes the movement as like new, each screw shows marks. A good watchmaker will service a 321 movement without leaving those marks. I also check the column wheel just to make sure it has all its columns, and this one does. The clutch bridge is the correct shape, and thats about all I can get from the photo.
The movement number fits the range. However it is 2500xxxx and I see this in 105.012’s as well as Seamasters. I am not saying it has problem, just that here we have an incomplete watch, with no history. How happy would you be if you paid a lot and found that Omega would not issue an extract? Just remember it is a possibility.
The major negative on this watch, apart from having to find a DO90 bezel, is that the dial is not that attractive due to the washed off plots.
How much is it worth? Well three days to go and its around $2500. Thats cheap, but I think double this is too expensive – so somewhere between.