Please help on paper

[vyadem]

Dear forum users, it should be your opinions and knowledge in the creation of paper. Certainly, just as with hardboard, cardboard, canvas paper was going through its development and had the characteristics at any given time.
There is such a paper. On the dating of the work on it, it is the end of 19 century.
Stored in an album that still support the remnants of the old glue in 6 locations. Paper dense. Wore one man supposedly savvy (?) In this matter, he did not like the texture of the paper itself says very suspicious blotches. Paper really monotonous white, but with the inclusion of a mass of some thin strands. It was a lot, as the paper itself is very high quality and smooth.
Perhaps someone has already met with a similar question, saw the work on this paper or the paper itself.
If necessary, I can send better photos on e-mail.
I would be very grateful for any help!

[Сима]

vyadem, it still chemical, to face to discuss, in my opinion, it makes no sense. If you are in Moscow, then carry them to the Grabar. There used to be a base for the paper - ie precisely dated pieces, which are differently illuminated in blue light.

[NEO]

vyadem,
Good day! Tell me how you solved the problem on paper? I have a problem - I want chafing Piranesi etchings date - by type of paper is old. Thanks