When did the Arabic numerals appear on clock faces?

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Leonardo Fibonacci is credited with introducing the Arabic numbers (0123456789) into European use with his book, "Liber Abaci," in 1202. However, clock-face numbers remained Roman Numerals well into the 15th Century, when Arabic numbers began to appear on clocks in Britain.

As to the first use of Western Arabic numbers on a clock face. I have found no exact reference. However, I did come across another referencing the Lund Astronomical Clock, built in 1422, in Sweden (http://www.academia.edu/12745170/The_Evidence_for_Islamic_Scientific_Works_in_Medieval_Iceland).

Katherine 244

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Source: stackoverflow.com

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