Tissot Chinoise Swiss made open face pocket watch like new in original Italian wood presentation case. High grade ETA 6497, partially skeletonized movement with acrylic display back accessible by pushing the crown in (like in a hunter watch) with the option to wind it through the rear crystal with the key on the chain as shown. Blue screws, Triovis regulator (AFAIK only Omega and Tissot use Triovis (alternative to swan neck type regulator). Screw (or stud) balance as seen. Keeps time very well. About $1200 new, now discontinued.