All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Feb 2024 | Key amended to more accurately align with nominals. | |
| 22 Oct 2014 | 1-4: turning added | Chris Pickford via 00010942 |
| 21 Oct 2014 | 1-4: frame id added; frame info added | Philip Denton via 00010938 |
| 17 Apr 2007 | Tenor nominal added (G-49c) | Andrew Higson via pNBR |