| Sold | Grade | Monthly Average |
| Aug 2025 | 1.0 | $20.00 |
| Nov 2017 | 5.0 | $123.50 |
| Sep 2019 | 4.0 | $115.00 |
| Apr 2015 | 4.0 | $31.00 |
| Jul 2025 | 3.5 | $40.00 |
| Jan 2024 | 3.5 | $26.00 |
| Nov 2023 | 3.5 | $23.40 |
| Nov 2021 | 3.5 | $79.20 |
| Jan 2013 | 3.5 | $36.85 |
| Nov 2017 | 3.0 | $35.00 |
| May 2017 | 3.0 | $31.51 |
| Oct 2023 | 2.5 | $27.00 |
| Jun 2017 | 2.0 | $21.38 |
| Nov 2024 | 1.8 | $25.00 |
| Oct 2024 | 1.0 | $16.00 |
| Mar 2020 | 0.5 | $38.00 |