| Sold | Grade | Monthly Average |
| Nov 2011 | 4.0 | $33.00 |
| Jun 2025 | 3.0 | $48.00 |
| Jul 2024 | 3.0 | $43.00 |
| Oct 2020 | 3.0 | $59.00 |
| Jan 2019 | 3.0 | $42.00 |
| Dec 2012 | 3.0 | $50.00 |
| Aug 2025 | 2.5 | $44.00 |
| Sep 2021 | 2.5 | $42.00 |
| Oct 2020 | 2.5 | $50.00 |
| Aug 2015 | 2.5 | $62.00 |
| May 2024 | 2.0 | $38.00 |
| Jan 2020 | 1.8 | $26.00 |
| Jan 2024 | 1.5 | $30.00 |
| Oct 2020 | 1.5 | $37.50 |
| Oct 2018 | 1.0 | $21.00 |
| Oct 2022 | 0.5 | $39.00 |