(generally drawn by horses). In the late 1950s, license plates began to be classified according to the type of vehicle category (e.g., the letter "P" was for private motor vehicles, "O" for buses, "C" for commercial uses, etc.). Some municipalities of the Interior inscribed their coat of arms and/or "motto" on the license plate (e.g.: "Capital of Energy" for the district of Hernandarias, Alto Paraná). The format changed over the years. The license plates for special vehicles both in the interior and in the capital (e.g., state, municipal, diplomatic, judicial or other authorities) were of a different format than the general one. (e.g.: blue background for vehicles of municipal authorities -in the case of license plates for the interior-, etc.) Asuncion (capital) In the case of Asunción, for private vehicles the plate format only had numbers inscribed in white, and the background was blue; in addition to including the name of the municipality with the country and the last two digits of the year of the patent (sometimes registered by the license plate itself, or otherwise affixed by seal). The last serial for Asunción was 218 030, from 1999. Asunción used the license plate classification format according to vehicle category (letters: P, O, C, etc.) in force from the end of the 1950s to 1984. For special vehicles (tax-exempt, e.g. state), the background was usually yellow. Public transport vehicles (collective) and taxis had red bottom plates with white numbers. Vehicles intended for municipal use (garbage collector, municipal police, street repair machine, etc.) had pink bottom plates with black numbers. Interior (departmental) No fixed system From the first license plates for vehicles in the country, until the end of the 1950s, the license plates did not have a fixed design, they simply had two or three serial numbers and the last digits of the year. System C 1234 (by category) Since the late 1950s, license plates were classified according to the type of vehicle category (letters: P, O, C, etc.). In the early 1960s, the interior license plates changed the background to white with red inscriptions (used until today), as they previously had no fixed design. However, for special vehicles they had a different format/design (e.g.: municipal authority license plates had a blue background, etc.) System C 1–1234 (by category and department) In 1967, interior license plates began to be classified by department, according to the first number followed by a