| Sold | Grade | Monthly Average |
| Jul 2012 | 4.0 | $38.00 |
| Apr 2023 | 3.5 | $83.00 |
| Jan 2022 | 3.5 | $77.00 |
| Dec 2025 | 2.5 | $67.00 |
| Jan 2025 | 2.5 | $42.00 |
| Dec 2018 | 2.5 | $62.00 |
| Oct 2014 | 2.5 | $21.11 |
| Mar 2013 | 2.0 | $44.18 |
| Jul 2024 | 1.5 | $75.00 |
| Jun 2025 | 1.0 | $16.00 |
| May 2019 | 1.0 | $32.00 |
| Oct 2017 | 0.5 | $16.01 |
| Jan 2016 | 0.5 | $15.50 |
| Nov 2013 | 0.5 | $14.25 |