I don't think I've ever seen a dial like this:

(thanks)
Apparently consigned to the upcoming Watches of Knightsbridge auction in July.

 

Rounded Logo was not used in the 50's, I am quite sure.

 

It seems @Privateday7 saw one of these, on a trip to the Omega Museum. Does the rounded logo look the same?
https://omegaforums.net/threads/vis...master-and-race-to-the-depth.6615/#post-77492

 

Quite cool... it reminds me less of a golf ball, more like a hammered "tsuiki" type finish as seen on the bezel and bracelet links of the crazy G-Shock Hammer Tone.

 

Reference 2577-23, cal. 354. Photos for future reference:

 

I agree - reminds of those "hand hammered wok" commercials I used to see on TV...

 

The dial also reminds me of a JLC Memovox, albeit with the textured centre rather than the alarm disc. Is this dial one-piece, or a separate outer and inner piece ?

 

Interested in the manufacturing process as well. Whichever way was used, the final result is quite unique!