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Letters I, O, Q, T, W and X not used in serials this practice continued until 1974. Six-digit plates were originally 16 inches in length, but reduced to 15 inches later.Įmbossed navy blue on golden yellow "PENNA 1924" at bottom, with keystones on either sideĮmbossed golden yellow on navy blue "1925 PENNA" at bottom, with keystones on either sideĮmbossed navy blue on golden yellow with border line "1926 PENNA" at bottom, with keystones on either sideĮmbossed golden yellow on navy blue with border line "1927 PENNA" at top, with keystones on either sideĮmbossed navy blue on golden yellow with border line "PENNA 1928" at top, with keystones on either sideĮmbossed golden yellow on navy blue with border line "1929 PENNA" at top, with keystones on either sideĮmbossed navy blue on golden yellow with border line "1930 PENNA" at bottom, with keystones on either side White on medium blue porcelain "PENNA", aluminum keystone and "1915" at leftĮmbossed black on orange "PENNA", keystone and "1916" at leftĮmbossed white on brown "PENNA", keystone and "1917" at leftĮmbossed white on black "PENNA", keystone and "1918" at leftĮmbossed red on black "PENNA", keystone and "1919" at rightĮmbossed white on navy blue "PENNA 1920" at bottomĮmbossed black on golden yellow "PENNA 1921" at bottom, with keystones on either sideĮmbossed brown on cream "PENNA 1922" at bottom, with keystones on either sideĮmbossed golden yellow on navy blue "PENNA 1923" at bottom, with keystones on either side White on black porcelain "PENNA", aluminum keystone and "1914" at left White on green porcelain "PENNA", aluminum keystone and "1913" at left White on woodgrain-colored porcelain "PENNA", aluminum keystone and "1912" at left White on black porcelain "PENNA", aluminum keystone and "1910" at leftīlack on yellow porcelain "PENNA", aluminum keystone and "1911" at left White on red porcelain "PENNA 1907" at top or at rightīlack on yellow porcelain "PENNA 1908" at top or at rightīlack on white porcelain "PENNA 1909" at top or at right Plates with serials 1 through 99 had the state abbreviation and year at the right. White on blue porcelain "PENNA 1906" at top or at right (see Notes) No slogans were used on passenger plates during the period covered by this subsection.
#Antique motorcycle plates pa license
The 1955 (dated 1956) issue was the first Pennsylvania license plate that complied with these standards. In 1956, the United States, Canada, and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association and the National Safety Council that standardized the size for license plates for vehicles (except those for motorcycles) at 6 inches (15 cm) in height by 12 inches (30 cm) in width, with standardized mounting holes.