| Sold | Grade | Monthly Average |
| Sep 2024 | 7.0 | $45.00 |
| Dec 2009 | 9.4 | $5.43 |
| Sep 2008 | 9.4 | $6.40 |
| Aug 2008 | 9.4 | $6.40 |
| Mar 2006 | 9.4 | $4.00 |
| Oct 2005 | 9.4 | $4.00 |
| Aug 2005 | 9.4 | $2.40 |
| Jul 2005 | 9.4 | $2.40 |
| May 2004 | 9.4 | $3.00 |
| Nov 2003 | 9.4 | $2.40 |
| Apr 2023 | 9.2 | $33.00 |
| Sep 2021 | 8.5 | $19.50 |
| Feb 2017 | 8.5 | $8.49 |
| May 2022 | 7.5 | $52.34 |
| Oct 2018 | 4.0 | $3.80 |
| Sep 2018 | 3.5 | $3.80 |
| Oct 2020 | 3.0 | $2.85 |