| Sold | Grade | Monthly Average |
| Nov 2015 | 5.5 | $71.00 |
| Dec 2023 | 4.0 | $70.00 |
| Jan 2022 | 3.0 | $29.00 |
| Apr 2017 | 3.0 | $16.00 |
| Sep 2013 | 3.0 | $31.50 |
| May 2011 | 3.0 | $35.00 |
| May 2022 | 2.5 | $23.00 |
| May 2020 | 2.5 | $39.00 |
| Mar 2016 | 2.5 | $15.59 |
| Aug 2017 | 2.0 | $11.00 |
| Jun 2021 | 1.8 | $32.50 |
| Jul 2017 | 1.8 | $38.00 |
| May 2021 | 1.5 | $32.00 |