The Rare Book Detective: books, type, watermarks: 1485 Interlaced initial I (large )
The Rare Book Detective: books, type, watermarks: 1518 Zoomorphic initial I, with unicorns
The Rare Book Detective: books, type, watermarks: 1533 Zoomorphic initial I (upside down)
The Rare Book Detective: books, type, watermarks: 1541 Inhabited initial I (small)
The Rare Book Detective: books, type, watermarks: 1550 zoomorphic initial I (with peacock)