All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Sep 2022 | 6: weight amended | Whitechapel records via David Sloman |
| 23 May 2019 | fr1: date amended | John Baldwin via database |
| 21 Jan 2017 | 1-6: turning,frameid,canon info added; frame info added | Andrew Higson via 00011967 |
| 20 Apr 2009 | Tenor note not Ab; nominal Bb-41c | Bill Hibbert (Graham Nabb recording) via pNBR |
| 1-6: nominal added | Bill Hibbert via 00007321 |