twirld:Codex Rotundus “266 almost perfectly circular pages of parchment have been bound together to
twirld:Codex Rotundus “266 almost perfectly circular pages of parchment have been bound together to build a block of 3cm height with a diameter of only 9cm.”The initials of the metal clasps point us to Adolph of Cleves, Lord of Ravenstein (1425 - 1492) as the owner. -- source link