| Sold | Grade | Monthly Average |
| Apr 2013 | 7.0 | $11.55 |
| Nov 2014 | 6.0 | $16.20 |
| May 2020 | 5.0 | $25.00 |
| Apr 2023 | 4.0 | $70.00 |
| Oct 2019 | 4.0 | $10.00 |
| Sep 2014 | 4.0 | $10.00 |
| Apr 2014 | 4.0 | $6.00 |
| May 2010 | 4.0 | $6.00 |
| Nov 2016 | 3.5 | $9.60 |
| Oct 2014 | 3.5 | $10.35 |
| Jan 2013 | 2.5 | $4.50 |
| May 2023 | 2.0 | $35.00 |
| Apr 2019 | 2.0 | $5.49 |
| Aug 2015 | 1.8 | $5.80 |