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In page Celts:

"

The Coligny calendar, which was found in 1897 in Coligny, Ain, was engraved on a bronze tablet, preserved in 73 fragments, that originally was 1.48 metres (4 feet 10 inches) wide and 0.9 metres (2 feet 11 inches) high (Lambert p. 111). Based on the style of lettering and the accompanying objects, it probably dates to the end of the 2nd century.[1] It is written in Latin inscriptional capitals, and is in Gaulish. The restored tablet contains 16 vertical columns, with 62 months distributed over 5 years.[citation needed]