United Nations Tour Numeral-Silver Number #3
In 1979, the UN created metallic silver numbers, in Arabic numerals, to indicate completion of a further 180 days (consisting of the accumulation of periods of no less than 90 consecutive days of service) with a UN mission after qualification for the medal or last numeral. The UN regulations establishing the numerals state that they are not retroactive unless an individual returns to a mission in or after June 1979. When that happens, the member includes the extra time spent on the first tour in the calculations for the numeral.