| Paper |
 P43
 |
| Date of use | 1772 |
| Paper mill | Gaudenzio Fossati, Maina / Maderno |
Watermark P43A
| Watermark | |
| Countermark | crown / GF |
| Source | A Wn Mus.Hs._10075_1_fol56v55r54v53r |
 |  | |
| countermark | sheet  |
Twinmark P43B
| Watermark | |
| Countermark | crown / GF |
| Source | A Wn Mus.Hs._10075_2_fol268v273r280v269r |
 |  | |
| twin countermark
| twin sheet |
Copyists and works |
|
| Copyists using paper P43 | WK71B, WK71F, WK72R |
| Scores written on paper P43 | Salieri_10075 |
| Staff ruling on paper P43 | 10/184N |