Paper was produced in earlier centuries from rags (old clothes, rags e.g. linen). The material was crushed with a knife, soaked for weeks and then crushed, ground and rolled in the paper mill.
The resulting paper pulp was then placed in large wooden briquettes or laid paper. Each individual sheet was hand-scooped from the paper pulp with a close-meshed sieve and hung up to dry.
Handmade paper at AMAZON: (Please click on the picture)
The paper was relatively rough and the ink or ink ran on it almost like a blotting paper. In order to create a usable surface, the paper was finally coated with glue. This is where the term
"coated paper" comes from.
The drawing paper of the silverpoint needs a primer to make the pencil rub off. The best priming paper used today is wood-free drawing paper from 120 g/m² or watercolour paper of fine grain size
with a weight from 150 g/m². A paper that is too smooth is not suitable because it does not produce a good abrasion of the silverpoint.
However, there is also laid paper (drawing paper, watercolour paper), e.g. from the Zerkall company or from the Homburg paper mill.
With the large number of manufacturers and the most different grammages (paper weight/m²) only try it out.
By Amazon you find a complete finished and grey coloured silverpoint paper.