| Sold | Grade | Monthly Average |
| Apr 2024 | 9.4 | $77.00 |
| Oct 2023 | 9.0 | $39.00 |
| Nov 2023 | 8.0 | $39.60 |
| Oct 2023 | 7.0 | $42.00 |
| Jan 2021 | 9.4 | $75.00 |
| Dec 2017 | 9.4 | $75.00 |
| Aug 2012 | 9.4 | $85.00 |
| Mar 2012 | 9.4 | $83.00 |
| Mar 2011 | 9.4 | $83.00 |
| Jan 2011 | 9.4 | $83.00 |
| Dec 2010 | 9.4 | $83.00 |
| Jul 2010 | 9.4 | $125.00 |
| Mar 2007 | 9.4 | $144.00 |
| Aug 2023 | 9.2 | $56.00 |
| Jan 2022 | 8.0 | $100.00 |
| May 2017 | 8.0 | $60.00 |
| Jul 2015 | 8.0 | $54.00 |
| Feb 2014 | 7.0 | $54.00 |
| Dec 2010 | 6.0 | $45.00 |
| Dec 2007 | 6.0 | $96.00 |
| Jan 2016 | 4.0 | $16.20 |