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Bus
Before 1924 buses were registered as commercial vehicles. In 1924 Omnibus plates were issued with an "O" prefix. Then in 1926 a separate category of "H" prefix bus plates were issued. See above. From 1926 to 1929 those vehicles that were required to have a certificate of convenience were designated by an "O" prefix. In 1929 a new law was passed requiring all buses to have this certificate and thereby ending the "H" prefix plate. Following this all common carrier and for hire buses used the "O" prefix until 1968 when the "BA" prefix came into use.
Thank you to Jake Eckenrode and Eric Tanner for this information.
1950 - 1963
1950
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OB721 - Plates measure 6" x 11" |
 From Clayton Moore  From unknown |
Not offered on this format |  |
1951
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OC991 - Plates measure 6" x 11" |
 From Jerry McCoy |
Not offered on this format | |
1952
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O987 - Plates measure 6" x 10 1/4" |
 From Jerry McCoy |
Not offered on this format | |
1953
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OB788 - Plates measure 6" x 10 1/4" |
 From Jerry McCoy |
Not offered on this format | |
1954
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OD024 - Plates measure 6" x 10 1/4" |
 From Drewski |
Not offered on this format | |
1955
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OB205 - Plates measure 6" x 10 1/4" |
 From Jerry McCoy |
Not offered on this format | |
1956
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Serial formats: O1 - O9999 OA000 - OZ999 Observed high: OC813 - Plates measure 6" x 12" |
 From Jake Eckenrode |
Not offered on this format | |
1957
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O10000 to O22177 - Plates measure 6" x 12" |
 From Chuck Sakryd |
Not offered on this format | |
1958 to 1963
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O10-000 to O30-329 - Early plates had a tab slot at top-right but tabs were never used. Highest number known with a tab slot is O25-716. - Plates measure 6" x 12" |
 (With tab slot) From Jerry McCoy  (Without tab slot) From Worthpoint |
Not offered on this format | |