If you are curious about the history of typographical punches this project may shed some light on their use in historic book production. This project from the UK is called ‘Small performances’ and investigates the typographic punches of John Baskerville (1707–75).This page from the University of Cambridge includes a history of these punches, thier use and links to images of the collection. Baskerville Punches
Book history and typographical punches

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