It sounds like a theme from an Italian opera. I think it is in 3/4 time. It also might be a Siggy Romberg waltz from an Operetta.
The chords sound like: C | Co7 | G7 | G7 | G7 | G7+ | C | C | C | D7 | G | G |
A7 | A7| D7 | D7 | C | Co7 | G7 | G7 | G7 | G7+ | C | C | C | Gm6 | A7 | Cm |C |
G7 | C | C ||