| Paper |
 P20
 |
| Date of use | 1769 - 1772 |
| Paper mill | Carlo Samueli e compagni, Promontorio, Toscolano |
Watermark P20A
| Watermark | 3 crescents |
| Selenometrie in mm | xz: 73, xy: 18 |
| Countermark | CS / C |
| Source | A Wn Mus.Hs._1058_2_fol92v91r94v93r |
 |  |  |
| watermark | countermark | sheet  |
Twinmark P20B
| Watermark | 3 crescents |
| Selenometrie in mm | xz: 72, xy: 22 |
| Countermark | CS / C |
| Source | A Wn Mus.Hs._1058_2_fol82v81r88v87r |
 |  |  |
| twin watermark
| twin countermark
| twin sheet |
Copyists and works |
|
| Copyists using paper P20 | WK71D, WK71E, WK71F, WK72E |
| Scores written on paper P20 | Gassmann_17775, Gazzaniga_1058, Salieri_17838 |
| Staff ruling on paper P20 | 10/189K, 10/193C, 10/c.185, 10/c.189 |