| Sold | Grade | Monthly Average |
| Jun 2023 | 4.5 | $17.50 |
| May 2017 | 4.5 | $19.50 |
| Mar 2021 | 4.0 | $50.00 |
| May 2025 | 3.5 | $34.00 |
| Dec 2010 | 3.5 | $10.25 |
| Sep 2021 | 3.0 | $10.00 |
| Sep 2020 | 3.0 | $9.30 |
| Mar 2021 | 2.0 | $6.27 |
| Jan 2021 | 2.0 | $20.90 |
| Dec 2019 | 2.0 | $6.60 |
| Jul 2016 | 1.5 | $5.60 |
| Aug 2010 | 1.5 | $5.60 |
| Aug 2021 | 0.5 | $2.00 |
| Oct 2016 | 0.5 | $2.00 |