TISSOT open face pocket watch series Musical Seasons with musical cylinder movement 4- Seasons from Vivaldi 'Spring', manual winding, Switzerland around 2010, reference T852.436.99.037.02, palladium coated brass case, silvered dial partial engine-turned, at 6 sight window on musical box, representation of spring, calibre ETA 2824-2, diameter approx. 60 mm, condition 1-2