In the very early days of Omega they produced a range of pocket watches for women. These were significantly smaller than mens pocket watches and posed significant engineering design challenges. All were expertly manufactured and finished and many function perfectly to this day. About 1% of these watches were sold with a superior "D"movement inside that was designed to accommodate  higher design tollerances. The 13''' NNL16P movement inside this pocket watch is one of these; a visual hint of superiority of this movement can be seen in the picture. Witness the four jewels set in solid gold chatons which are double screwed in place by micro-screws. Also note the swan-neck regulator. The are often used on mechanical watches capable of the highest level of accuracy to finely adjust the timekeeping - typically seen on chronometers. Stamped Omega within a small circle. Genuinely, this is a very rare ladies timepiece.
 
The enamel dial is in good condion with only a few errant specs visible to the unaided eye. One tiny hairline crack between 7 and 9. Roman numeral hour markers in black. Railroad minute outer. Small seconds sunken sub-dial at 6. Black Poire hands.
 
The case and case-back are solid silver, stamped .925 together with other hallmarks.  They are in good condition for their age. Small scratches and one dink as seen in the picture. Both the case and the dust cover snap closed tightly. Tight hinges. Engineered-back free of personal engravings.
 
The diameter of the watch (excluding the winder) is about 34.4mm. That makes it the same size as an average 1950s Omega Seamaster.
 
This lovely little watch runs well. So impressive!