Ladies Fob Watch with Heart Shaped Dial

An early 20^th Century Swiss cylinder in an engraved silver open face case with heart shaped dial.  Keyless gilt bar movement with going barrel. Plain cock with polished steel regulator, plain three arm gilt balance with blue steel spiral hairspring. Polished steel cylinder, steel escape wheel. Circular white enamel dial, small chapter of Roman numerals with a decorative heart shaped gilt border, gilt hands.  Heart shaped aperture to the front bezel of the silver open face case.  Surrounding bezel and back decoratively engraved.  Plain nonagon (nine sided) middle, circular silver cuvette, maker's mark "GS" in an oval.