| Sold | Grade | Monthly Average |
| Jan 2026 | 6.0 | $15.98 |
| Nov 2012 | 9.4 | $13.00 |
| Mar 2012 | 9.4 | $13.00 |
| Nov 2018 | 8.0 | $11.00 |
| Nov 2017 | 8.0 | $19.00 |
| Oct 2017 | 8.0 | $11.00 |
| Jan 2015 | 8.0 | $16.40 |
| Oct 2010 | 8.0 | $10.25 |
| Oct 2009 | 8.0 | $12.75 |
| Feb 2009 | 8.0 | $12.80 |
| Oct 2007 | 8.0 | $9.60 |
| Jul 2007 | 8.0 | $6.40 |
| Jul 2023 | 6.0 | $17.75 |
| Oct 2019 | 6.0 | $13.00 |
| Jun 2017 | 6.0 | $8.30 |
| Jun 2024 | 4.0 | $11.99 |
| Jun 2023 | 4.0 | $11.99 |
| Aug 2020 | 4.0 | $9.50 |
| Feb 2011 | 4.0 | $5.20 |
| Sep 2013 | 2.0 | $2.60 |