Placido Costanzi: List of works
- The Immaculate Conception, 1730
- Alexander the Great founding Alexandria, 1737
- A Miracle of Saint Joseph of Cupertino, 1750
- Arbitrato Di Papa Benedetto XIV, 1751
- Portrait of George Keith, 10th Earl Marischal, 1752
- Apollon Och Dafne, ?
- "o Martœuio De San Torpe, ?
- San Bartolomeo, ?
- San Francesco Di Paola, ?
- San Gregorio Al Celio, ?
- Young Cleric in a Cope Holding a Book, ?
- The Rape of the Sabine Women, ?
- Narcissus and Echo, ?