VARIATIONS
1950: Type 1 - Hyphen on 4-digit 695 - 1-104 (410 )
Type 2 - No hyphen on 4-digit 1314 -
1958: Type 1 - Hyphen on 4-digit 100 - 1-507 (1,408 P)
Type 2 - No hyphen on 4-digit 1639 - 2198 (560 P)
1959: Type 1 - No hyphen on 4-digit 100 - 1559 (1,460 P)
Type 2 - Hyphen on 4-digit 1-970 - 2-224 (255 P)
1968-69: Front tabs have "FRONT" in place of serial number.
1974: Low 4-digit plates have no hyphen
1981: Type 1 - White back 1 - 8-865,
17-425 - 17-888, 20-166 (9,250 P)
Type 2 - Unpainted back 10-241 - 17-084,
19-180 - 19-689 (7,354 P)
1983: Type 1 - Unpainted back 1 - 20-377
(84) Type 2 - White back 20-829 - 26-049 (5,221 P)
(85) Type 1a 27-329 - 30-427 (3,099 P)
1990-on: More recent month stickers have thinner font.
