| Sold | Grade | Monthly Average |
| Apr 2026 | 4.0 | $4.20 |
| Dec 2025 | 4.0 | $8.40 |
| Jul 2025 | 4.0 | $5.00 |
| Mar 2025 | 4.0 | $6.00 |
| Sep 2017 | 2.0 | $5.40 |
| Mar 2013 | 2.0 | $6.60 |
| Jul 2025 | 1.8 | $3.20 |
| Jul 2024 | 1.0 | $2.70 |
| May 2024 | 1.0 | $4.70 |
| Jun 2024 | 0.5 | $2.70 |
| Mar 2019 | 0.5 | $1.70 |
| Apr 2018 | 0.5 | $1.70 |