| Sold | Grade | Monthly Average |
| Apr 2011 | 4.5 | $61.00 |
| Jan 2021 | 4.0 | $74.00 |
| Apr 2022 | 3.5 | $135.00 |
| Dec 2017 | 3.5 | $63.00 |
| Apr 2022 | 3.0 | $69.00 |
| Jan 2024 | 2.5 | $71.00 |
| Apr 2022 | 2.0 | $56.00 |
| Feb 2015 | 1.8 | $35.00 |
| Jan 2026 | 1.5 | $48.00 |
| Nov 2025 | 0.5 | $28.00 |
| Jan 2019 | 0.5 | $16.50 |
| Jun 2018 | 0.5 | $11.01 |
| Apr 2018 | 0.5 | $36.00 |