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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.
1930 - 1939
1930
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O9053 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
 (6" x 10")  (6" x 12") From John McDevitt |
Not offered on this format | |
1931
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O4417 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
(6" x 10")  (6" x 12") From Jerry McCoy |
Not offered on this format | |
1932
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O4251 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
(6" x 10")  (6" x 12") From Eric Tanner |
Not offered on this format | |
1933
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O2356 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
(6" x 10")  (6" x 12") From Eric Tanner |
Not offered on this format | |
1934
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: 1 to 5783 - All plates measure 6" x 10" |
 (6" x 10") From John Willard |
Not offered on this format | |
1935
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O5851 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
 (6" x 10") From Philadelphia Free Library website  (6" x 12") From Clayton Moore |
Not offered on this format | |
1936
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O5216 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
 (6" x 10") From From Pl8source  (6" x 12") From Clayton Moore |
Not offered on this format | |
1937
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O5153 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
 (6" x 10") From Jerry McCoy  (6" x 12") From eBay |
Not offered on this format | |
1938
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O6218 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
 (6" x 10") From Clayton Moore  (6" x 12") From Jeff Francis |
Not offered on this format |  From John Anshant |
1939
| Notes | Number Plate | Personalized Plate | Sample Plate |
|
- Observed serial range: O1 to O1246 - Plates measure: O1 - O999: 6" x 10" O1000+: 6" x 12" |
(6" x 10")  (6" x 12") From Herb Fisher |
Not offered on this format | |