| No. | In Service | Withdrawn | Condition |
| NAB 1, NABAB 1 | Recoded NAB 1 - c1910. Converted to NB 25 - 20 August 1923 | ||
| NAB 2, NABAB 2 | Recoded NAB 2 - c1910. Converted to NB 26 - 20 August 1923 | ||
| NAB 3, NABAB 3 | Recoded NAB 3 - c1910. Converted to NB 27 - 20 August 1923 | ||
| NAB 4, NABAB 4 | Recoded NAB 4 - c1910. Converted to NB 24 - 18 June 1917 |