| Sold | Grade | Monthly Average |
| Jan 2026 | 8.0 | $38.70 |
| Nov 2023 | 9.4 | $51.00 |
| May 2016 | 9.4 | $49.95 |
| Jan 2014 | 9.4 | $45.00 |
| Apr 2012 | 9.4 | $45.00 |
| Feb 2012 | 9.4 | $45.00 |
| Sep 2025 | 8.0 | $43.00 |
| Jul 2021 | 8.0 | $40.50 |
| Apr 2021 | 8.0 | $40.00 |
| Jan 2021 | 8.0 | $45.00 |
| Sep 2019 | 8.0 | $40.00 |
| Dec 2017 | 8.0 | $40.00 |
| Feb 2016 | 8.0 | $40.00 |
| Jul 2014 | 8.0 | $36.00 |
| Jan 2025 | 5.5 | $62.00 |
| May 2024 | 4.0 | $24.00 |
| Jun 2011 | 4.0 | $20.00 |