| Sold | Grade | Monthly Average |
| Sep 2020 | 9.4 | $39.95 |
| Jul 2020 | 9.4 | $39.95 |
| May 2019 | 9.4 | $39.95 |
| Apr 2012 | 9.4 | $39.30 |
| Nov 2011 | 9.4 | $40.00 |
| Jul 2011 | 9.4 | $40.00 |
| Mar 2011 | 9.4 | $40.00 |
| Feb 2011 | 9.4 | $40.00 |
| Dec 2023 | 8.0 | $32.00 |
| Nov 2022 | 8.0 | $28.80 |
| Oct 2024 | 7.5 | $49.00 |
| Jul 2023 | 6.0 | $32.40 |
| Jun 2020 | 6.0 | $24.00 |