Guglielmo Janni is an Italian artist with 29 auction lots recorded since 1989.
| Title | Date | House | Price |
|---|---|---|---|
| Figura | 2024-11-13 | Finarte | EUR 8,910 |
| Figure | 2024-11-13 | Finarte | EUR 7,000 |
| Natura morta con bottiglie | 2019-11-14 | Finarte | EUR 3,840 |
| Natura morta con bicchiere di vetro | 2018-11-13 | Finarte | EUR 7,500 |
| Natura morta con forbici | 2018-11-13 | Finarte | EUR 2,000 |