What movement might fit a 2247 case?

So I was going through some stuff I got last fall, where I found I had acquired a case marked 2247.

This reference number does not seem to be in any of my case clamp, or crystal charts. Most of the charts seem to start around 2400.

I looked through the eBay listings and found the auction overview. I thought it might have indicated the movement.



Giggle AI turned up nothing, neither did the omega vintage site.

Curiously the 134x quartz movement I had on my desk fits into the case.


These are indicated at 25.6mm. There may be a mm gap so 26 or 27mm might fit. The 27.9 55x at 27.9mm movement is too large, although this may be another case what takes a 27.5 dial. The bezel is missing so that might hold the crystal in.

My guess this would fit one of the non automatic movements. The auction stated 30.3 which would be the OD. So this is a fairly small watch by modern standards.

My first thought, after reading your post, was a cal 26.5. The lugs look typical of the 40s or even 30s.

Searching the Vintage omega pages by caliber does show 26.5 movements fitting into cases that do start with 22xx . Most examples have the thicker lug.

Here is a side view of the case. The lugs are kinda spindly.



The missing bezel will be more of a challenge.

I found it using those additional search terms.
Giggle can be selective these days since it tends to regurgitate AI hallucinations.

More to my surprise, I already have a complete 26.5 T3 complete watch.