| Sold | Grade | Monthly Average |
| Mar 2026 | 4.5 | $17.00 |
| May 2026 | 2.0 | $21.00 |
| Nov 2022 | 4.0 | $30.00 |
| Feb 2025 | 3.0 | $9.50 |
| Sep 2020 | 2.5 | $14.25 |
| Dec 2017 | 2.5 | $6.50 |
| Dec 2009 | 2.5 | $5.40 |
| Aug 2024 | 2.0 | $4.60 |
| Apr 2024 | 2.0 | $5.60 |
| Apr 2023 | 2.0 | $11.50 |
| Nov 2020 | 2.0 | $10.80 |
| Aug 2015 | 2.0 | $7.25 |
| Oct 2024 | 1.8 | $9.60 |
| Apr 2023 | 1.8 | $11.50 |
| Oct 2022 | 1.8 | $9.60 |
| Apr 2019 | 1.8 | $12.00 |
| Feb 2014 | 1.8 | $7.80 |
| Apr 2012 | 1.8 | $8.10 |
| Aug 2010 | 1.5 | $6.30 |