Rare medieval bookmark exceeds expectations at auction
thehistoryblog.com
thehistoryblog.com
It would make a lot more sense that the bookmark was placed in the source book rather than in the copy. I.e. the wheel would be turned to the source column they had been reading from.
Scribe would change the margin size and line spacing, and the parchment would be a different size than the source, so the page breaks would end up in different locations in the text.
> The pre-sale estimate £800-1200 ($1073-1610). It sold for £7,000 ($9390).