(03-01-2017, 10:29 AM)Diane Wrote: You are not allowed to view links. Register or Login to view....
I expected, then to be able to provenance it pretty closely within no more than a few days - say a week at the very most. Medieval European manuscripts of that kind are routinely assigned place and date within a day in the real world. 
...
Even if there are dates in the manuscript (e.g., calendars and feast days), the place and date are often not known and the bibliographers and historians will assign them to a quarter (e.g., 15th century 2° or to a half-century, e.g., 2nd half of 15th century) based on the content, physical properties, design tradition, subsequent ex libris dates, and handwriting. The handwriting style (e.g., Carolingian, Merovingian, proto-Gothic, Italic, Gothic book, secretary hand, etc.) is one of the biggest clues when combined with other factors, especially if it is an unillustrated text.
If it's an illuminated text from one of the major studios, they can usually narrow down the date to within a decade.
If it's an astronomy text, they can sometimes figure it out from the charts, but there's always the problem of whether the notes about eclipses are records of ones that have been seen or projections of ones that are expected to happen. A big part of astronomy at the time was predicting eclipses and comets since they were considered important omens and messages from the heavens so guessing the date of the manuscript means interpreting the charts and figuring out whether they are past or future events.
It's rare for an exact decade to be known. I've only seen a small percentage where they knew the date within a few years. The one consistent exception is legal documents, which were usually (but not always) dated. But the European book manuscripts usually require detective work and guesswork.
I've found a small group of manuscripts that have some commonalities with a specific aspect of the VMS and frustratingly, the historians have no idea where they are from. Based on the handwriting, they guessed that they
might be from one of the major centers where this writing style was used (London, Prague, Paris, Lombardy...), but they don't know.
Arabic manuscripts are different. It's not uncommon for them to include a date of creation, sometimes even the month and day.