This ref 2640 (circa 1955) with cal 283 has a speckled dial that reminds me of the fauxtina that brands are sometimes putting on vintage re-issues. But it appears to be all original, including crown and signed crystal, with nice sharp case lines. The similar sub-second 2639 is much more frequently seen; both references are a perfect 36mm diameter.
I am a sucker for multicolour galvanic-sandwich dials
it is a ref CK 2325 with nice size at 37.5 mm
Not perfect but hard to find with this dial version in anthracite/black/copper galvanised (not painted/inked).
Most likely the seconds hand was painted later but it gives a nice contrast on the dark dial, better than a blued one...
Have to find a minute hand of about 15.5. - 16 mm because the tip of the installed one has snapped off.
So if somebody can help would be much appreciated
Here's a relatively well preserved 2750 (-8). Perhaps the reference in which "sunken indices" dials were most often used (as also in the 2760 with center second).
Just back from service + new orig. Ω crystal.
Original Ω strap won from the same auction house as the watch 3 days before, so I decided they were meant for each other.
Sorry for the blurry photo, but I just can't contain myself. This 2639 dagger dial is one of my absolute favorites.