Preferred label
turn-in darts
Note (en)
Note
Dart-shaped cuts in a turn-in created by the binder removing pieces of the covering material. This was probably done to make it easier to adhere the turn-ins to the board where there was an excess of soft, stretchy skin or harder areas that would not adhere easily.
Historical/cultural note
Note (en)
Note
It is most often found on medieval bookbindings in Europe and the Eastern Mediterranean.
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