| Sold | Grade | Monthly Average |
| Jan 2026 | 2.0 | $28.00 |
| Nov 2021 | 3.0 | $35.00 |
| Nov 2020 | 3.0 | $42.00 |
| May 2018 | 3.0 | $39.00 |
| Jul 2021 | 2.5 | $33.00 |
| Mar 2017 | 2.5 | $23.75 |
| Sep 2011 | 2.5 | $15.75 |
| May 2018 | 2.0 | $21.85 |
| Oct 2017 | 2.0 | $19.95 |
| Aug 2017 | 2.0 | $21.00 |
| Mar 2024 | 1.0 | $11.25 |
| Nov 2020 | 0.5 | $6.30 |