Codes used in several countries
YY on a licence plate
YY is an area code in 3 countries. The plate's style and country code tell them apart.
Greece
YY-1234Code details →East Attica
Norway
YY 12345Code details →Nordland
named after Svolvær
United Kingdom
YY51 ABCCode details →Beverley (Yorkshire)
Greece
Norway
United Kingdom