Thought it would be nice to see a round-up of ΩF's engine-turned goodness. I'll start with some mid-50's Clous de Paris from V&C. Cal P453/3B, 36mm.
I have nothing nearly as beautiful as that piece, but I can throw in a budget alternative I think, though, that the correct designation for this one is waffle dial
One more... Zenith cal 68 in 18k YG by Thomas Engel, no. 25 of 25, with guilloché front and back. See JohnChris's excellent write-up here: https://omegaforums.net/threads/zenith-meets-breguet-the-chronometers-of-thomas-engel.8261/
Other than Chopard, I think VC does the best with these. I only say Chopard because some of their Guilloche dials are provided by the same shop that supplies Phillip Dufour
The case back of a 17-ligne Omega private label pocket watch, gold filled case. The 5,xxx,xxx serial number seems to indicate circa 1916 if my reference is correct. Shown in its original sharkskin, satin, and velvet display case.