consistent as the vehicle owner bought either a plate or a kit from various dealers, such as petrol stations. Opposite to many other countries, there were no special codes for police, post or other national services apart from the military. One tradition was that the official vehicle of the county governor had the number 1 after the county code, however "A 1" belonged to the king. These plates were not used after 1974. All vehicles had to replace the plates. There are no historic plates in Sweden and historic cars have to use modern (post-1973) plates. All vehicles over 30 years old and not being used as a commercial vehicle are regarded as "veteran" by the road authority, becoming tax-exempt and only needing to pass vehicle inspection every second year. These vehicles use ordinary plates and approval stickers. Codes A, AA, AB – City of Stockholm B, BA, BB – Stockholms län C – Uppsala län D – Södermanlands län E, EA – Östergötlands län F, FA – Jönköpings län G – Kronobergs län H – Kalmar län I – Gotlands län K – Blekinge län L, LA – Kristianstads län (today part of Skåne län) M, MA, MB – Malmöhus län (today part of Skåne län) N – Hallands län O, OA, OB – Göteborgs och Bohus län (today part of Västra Götalands län) P, PA – Älvsborgs län (today part of Västra Götalands län) R – Skaraborgs län (today part of Västra Götalands län) S, SA – Värmlands län T, TA – Örebro län U, UA – Västmanlands län W, WA – Kopparbergs län (today Dalarnas län) X, XA – Gävleborgs län Y – Västernorrlands län Z – Jämtlands län AC – Västerbottens län BD – Norrbottens län no letter – military vehicles; still in use After 1973 After 1973 the format changed to three letters followed by three digits. The typeface was custom made to increase readability, and the plates were made in embossed sheet steel. In January 1984 the plates were changed to plastic with reflective tape on them, still embossed. This caused problems since the tape would wear off and decrease the readability of the plate. In January 1994 a new plate was introduced that was made from a solid piece of plastic, with a customised Helvetica typeface. The issue of these plates was halted quickly when Photoblocker spray paint became popular and on 1