We often have a Sinaiticus anomaly.
Hundreds of leaves are like new, beautiful pristine parchment, often with super-ink, and do not have the acid-ink corrosion that is normal for iron gall ink om parchment.
(And 86 pages are pale white parchment, they forgot to get “yellow with age”)
“Phenomenally good condition” - Helen Shelton
“the conservation conditions of CS are absolutely perfect” - Sara Mazzarino
And then another page is said to be old!
How can this be in the same manuscript, young and old leaves together?