| Sold | Grade | Monthly Average |
| Jun 2026 | 3.5 | $19.00 |
| Oct 2025 | 9.4 | $56.00 |
| Sep 2023 | 9.4 | $110.00 |
| Dec 2010 | 9.4 | $80.00 |
| Apr 2016 | 9.2 | $27.33 |
| Dec 2018 | 8.0 | $79.00 |
| May 2012 | 8.0 | $64.00 |
| Feb 2012 | 8.0 | $64.00 |
| Dec 2025 | 6.5 | $35.40 |
| Mar 2019 | 6.0 | $59.00 |
| Dec 2017 | 6.0 | $72.00 |
| Aug 2023 | 5.5 | $40.00 |
| Mar 2023 | 4.5 | $29.00 |
| Nov 2015 | 4.0 | $40.00 |
| Feb 2010 | 4.0 | $40.00 |