| Sold | Grade | Monthly Average |
| Jul 2026 | 1.0 | $12.50 |
| Apr 2026 | 0.5 | $9.60 |
| Jun 2025 | 5.5 | $33.00 |
| Apr 2025 | 5.0 | $32.00 |
| Jul 2024 | 4.0 | $26.00 |
| Feb 2013 | 4.0 | $33.00 |
| Jan 2026 | 2.0 | $22.00 |
| Feb 2025 | 2.0 | $12.00 |
| Sep 2020 | 2.0 | $9.60 |
| Nov 2012 | 2.0 | $9.00 |
| Feb 2024 | 1.0 | $17.00 |
| Feb 2019 | 1.0 | $6.00 |
| Feb 2013 | 1.0 | $6.60 |
| Aug 2023 | 0.5 | $9.40 |