Man, I'd like to see a pic!
There are plenty of pictures of them available. It's a 1940s Girard Perregaux made for Shell, and lubricated with Shell oil, not filled with it. The balance wheel would never turn in oil. Many of them look like they are filled with oil because the front and back crystals have yellowed over time. Google for Shell skeleton pocket watch.
I have a 14K non-skeletonized dress version, very thin and elegant. It was a Stanley Tools retirement watch from 1937.
The high end wrist watches in my collection are pre-Tag Heuers with the micro rotor autowind movements. And an Omega and a very early IWC wristwatch, with factory letter.
There's a bag full of American pocket watches, mostly Hamilton and Waltham that are all family watches.
The majority of my wrist watch and military pocket watch and timer collection "disappeared" during a house move 2 years ago. They were boxed up along with everything else from my home watch bench and tools, and the smaller clocks, maybe a dozen or more boxes. I never realized that box was gone until months later when I finally got around to setting up the watch bench.
There's also a number of old American clocks, from mid 19th century weight driven and spring-wind ogees to early 20th century mantel clocks.
My desk clock is a MIG 21 cockpit clock, shown here with some other black dial favorites. The 7750 top left is gone, as is the pocket watch in the background. The bottom left is a Benrus military diver homage watch made from a Seiko with custom dial, hands and bezel. Bottom right is one of the Heuers, a very clean Monza model.
The other two pics are the IWC, after a restoration and as it arrived, dirty, scratched but worth bringing back. It's a c.86, not seen very often.