All changes to tower
| Date | Change | Source |
|---|---|---|
| 4 Oct 2018 | 1: founder amended | Alan Bagworth via e-mail |
| 27 Jun 2017 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 29 May 2009 | Although tenor nearer Bb, ring nearer B | Tim Jackson; Roy Williams; Bill Hibbert via e-mail |
| 1-3: nominal added | Bill Hibbert via 00007498 |