| Sold | Grade | Monthly Average |
| May 2026 | 1.8 | $26.00 |
| Feb 2026 | 1.8 | $35.00 |
| Jul 2021 | 4.5 | $59.00 |
| Jan 2022 | 3.0 | $89.00 |
| Oct 2018 | 2.0 | $50.00 |
| Feb 2018 | 2.0 | $31.35 |
| Jul 2016 | 2.0 | $30.00 |
| Sep 2013 | 2.0 | $26.00 |
| Jul 2017 | 1.8 | $23.94 |
| Aug 2018 | 1.5 | $33.00 |
| Nov 2015 | 1.5 | $15.50 |
| Sep 2025 | 1.0 | $7.00 |
| Aug 2012 | 1.0 | $15.00 |