Last month at Baselworld, Hamilton introduced a sleek new skeleton watch, the Jazzmaster Viewmaster Skeleton. It is presented in a 40 mm stainless steel case with an open case back and powered by the H-20S caliber automatic movement. At 12 o’clock, just below the “Hamilton” logo on the silver and anthracite colored chapter ring, you can see the balance wheel, hairspring and escapement as they oscillate. Indexes are applied to the chapter ring and include luminous paint. On the men’s model Hamilton designers left off the 12 and 6 o’clock hour markers, however, the 36 mm lady’s model (shown below) does have all twelve hour markers.