Vintage Sankyo heart shaped music box Japan

Vintage Sankyo music box w tiny space for ring or precious studs. Enamel on gold coloured, heart shaped metal. I do not see any chipping or scratches. Made in Japan … do not recognize the song it plays but I am guess it is classical. Music boxes are the perfect gift because it is a throw back from all of today’s technology. 4” x 3 1/2” x 2 1/2”