Codes used in several countries
GD on a licence plate
GD is an area code in 4 countries. The plate's style and country code tell them apart.
Austria
GD 123ABCode details →Gmünd (Lower Austria)
Germany
GD-AB 1234Code details →Ostalbkreis (Baden-Württemberg)
named after Schwäbisch Gmünd
Poland
GD 12345Code details →Gdańsk (Pomeranian)
United Kingdom
GD51 ABCCode details →Maidstone (Garden of England)