| Sold | Grade | Monthly Average |
| Jun 2012 | 9.4 | $55.00 |
| Jul 2025 | 8.0 | $150.00 |
| Apr 2025 | 8.0 | $210.00 |
| Nov 2013 | 8.0 | $45.50 |
| Dec 2012 | 8.0 | $40.00 |
| Oct 2024 | 7.5 | $110.00 |
| Feb 2024 | 7.5 | $126.00 |
| Oct 2023 | 7.5 | $201.00 |
| Mar 2021 | 7.0 | $185.00 |
| Aug 2023 | 6.5 | $115.00 |
| Jan 2021 | 6.5 | $75.00 |
| Dec 2013 | 6.0 | $33.50 |
| Nov 2017 | 4.0 | $20.00 |
| May 2018 | 2.0 | $10.00 |