| Paper |
 P50
 |
| Date of use | 1768; 1773 |
| Paper mill | Giacomo Bertolazzo, Religione, Toscolano? |
| Commentary | No mark and countermark. |
Watermark P50A
| Watermark | |
| Cornermark | lily / GB |
| Source | A Wn Mus.Hs._10073_1_fol229v230r223v224r |
| no countermark |  |  | |
| cornermark | sheet  |
Twinmark P50B
| Watermark | |
| Cornermark | lily / GB |
| Source | A Wn Mus.Hs._10073_1_fol209v210r211v212r |
| no twin countermark |  |  | |
| twin cornermark
| twin sheet |
Copyists and works |
|
| Copyists using paper P50 | WK68C, WK73Q |
| Scores written on paper P50 | Philidor_17890, Salieri_10073 |
| Staff ruling on paper P50 | 12/186C |