| Sold | Grade | Monthly Average |
| Jan 2026 | 1.0 | $10.00 |
| May 2012 | 3.5 | $18.05 |
| May 2023 | 2.5 | $15.50 |
| Sep 2019 | 2.5 | $26.00 |
| Oct 2023 | 2.0 | $7.80 |
| Feb 2022 | 2.0 | $14.50 |
| Jun 2020 | 2.0 | $16.25 |
| Dec 2013 | 2.0 | $8.00 |
| Dec 2024 | 1.8 | $19.80 |
| Jul 2022 | 1.8 | $14.50 |
| Apr 2018 | 1.8 | $28.00 |
| Dec 2016 | 1.8 | $10.80 |
| Dec 2017 | 1.5 | $6.46 |
| Feb 2014 | 1.5 | $12.15 |
| Nov 2013 | 1.0 | $9.00 |
| Oct 2021 | 0.5 | $4.00 |