The Linotype and Intertype keyboards were different in each country, and even within a country differences could occur. This page compares the differences between the keyboards. As far as could be traced, this comparison hasn't been documented before.
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Source: Mergenthaler Linotype Company. (1959). “Useful matrix information 4th edition.” New York: Brooklyn.
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Source: our own machines
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Source: our own machines
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Source: Société Linotype Belge (s.a.) (s.d.) “Étude du clavier de la Linotype et conseils aux débutants.” Belgium: Brussels.
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Source: the machines at Typorama, Switzerland
c 2022 Maarten Renckens. All rights reserved.