105922 -

It is the product code for Brauberg Classic Pastel Albums , which feature heavyweight tinted terracotta cardboard (630 g/m²).

(specifically the "Blackcurrant Cordial" color, 120g/m²). 105922

There is a historical scientific article in the Philosophical Transactions of the Royal Society with the identifier 105922 titled "Experiments and observations on certain stony and metalline substances, which at different times are said to have fallen on the earth; also on various kinds of native iron," published in 1802. It is the product code for Brauberg Classic