| Sold | Grade | Monthly Average |
| Jan 2023 | 9.4 | $75.00 |
| Apr 2021 | 9.4 | $75.00 |
| May 2014 | 9.4 | $54.99 |
| Jan 2012 | 9.4 | $40.00 |
| Jun 2011 | 9.4 | $40.00 |
| May 2009 | 9.4 | $33.00 |
| May 2008 | 9.4 | $48.00 |
| Apr 2007 | 9.4 | $39.60 |
| Feb 2015 | 9.2 | $27.00 |
| Nov 2023 | 8.0 | $29.00 |
| Nov 2021 | 8.0 | $36.00 |
| Jun 2019 | 8.0 | $60.00 |
| Nov 2017 | 8.0 | $60.00 |
| Dec 2012 | 8.0 | $28.80 |
| Jun 2020 | 7.0 | $29.00 |
| Nov 2019 | 7.0 | $24.00 |
| Jul 2023 | 6.0 | $37.00 |
| Dec 2020 | 6.0 | $45.00 |