| Sold | Grade | Monthly Average |
| Nov 2011 | 4.5 | $32.09 |
| Mar 2021 | 4.0 | $67.45 |
| Oct 2018 | 4.0 | $81.00 |
| Dec 2017 | 4.0 | $30.00 |
| May 2025 | 3.5 | $48.00 |
| Dec 2021 | 3.5 | $54.00 |
| Feb 2014 | 3.5 | $56.00 |
| Oct 2012 | 3.0 | $26.00 |
| Apr 2019 | 2.0 | $29.00 |
| May 2025 | 1.8 | $32.00 |
| Nov 2024 | 1.8 | $23.00 |
| Jun 2011 | 1.8 | $35.00 |
| Jan 2019 | 1.5 | $25.50 |
| Jan 2017 | 1.5 | $16.00 |
| Sep 2019 | 1.0 Restored | $10.00 |
| Jan 2024 | 0.5 | $7.10 |
| Nov 2017 | 0.5 | $8.54 |