Christopher Ironside coins of the British Commonwealth had their reverse designed by Christopher Ironside. These coins were struck as (Board 1): Under the provision of the Manx Decimal Currency Act of 1970, a decimal series of coins for the Isle of Man were prepared and released on 20 October 1971 (½, 1, 2, 5, 10 and 50 new pence coins). The reverse of most of these coins was designed by Christopher Ironside. This set had the same composition and size as the corresponding British coins. These coins were struck as: 1971 first decimal set (issued from 1971 to 1974): As a country
Decimal calendar Decimal calendar A decimal calendar is a calendar which includes units of time based on the decimal system. The original Roman calendar consisted of ten months (however, the calendar year only lasted 304 days, with 61 days during winter not assigned to any month). The months of Ianuarius and Februarius were added to the calendar by Numa Pompilius in 700 BC. The ancient Egyptian calendar consisted of twelve months, each divided into three weeks of ten days, with five intercalary days. The French Republican Calendar was introduced (along with decimal time) in 1793, and was similar to the ancient Egyptian