| Sold | Grade | Monthly Average |
| May 2023 | 9.4 | $5.00 |
| May 2022 | 9.4 | $5.00 |
| Mar 2019 | 9.4 | $5.50 |
| Jun 2016 | 9.4 | $5.49 |
| Apr 2016 | 9.4 | $5.00 |
| Jul 2015 | 9.4 | $5.95 |
| May 2013 | 9.4 | $3.00 |
| Apr 2013 | 9.4 | $3.65 |
| Mar 2010 | 9.4 | $1.98 |
| Nov 2008 | 9.4 | $4.00 |
| Feb 2008 | 9.4 | $4.00 |
| Jun 2007 | 9.4 | $4.00 |
| Dec 2004 | 9.4 | $8.00 |
| Apr 2024 | 8.5 | $4.20 |
| Mar 2024 | 8.5 | $4.20 |
| Mar 2025 | 8.0 | $4.00 |
| Aug 2024 | 8.0 | $4.00 |
| Oct 2021 | 8.0 | $4.00 |
| May 2021 | 8.0 | $4.00 |
| Sep 2018 | 8.0 | $4.40 |
| Aug 2017 | 8.0 | $1.70 |
| Oct 2025 | 4.0 | $2.65 |