| seen by (11) | | location | date |
|---|
 | chrisschumny |  | Berguen | Jan 15, 2023 |
 | Yannik Gartmann | | Berguen | Oct 19, 2020 |
| bfsSwiss | | Samedan Station | Jun 21, 2019 |
 | Marco | | Celerina | Jul 24, 2015 |
 | Federico Paoletti | | Berguen | Nov 12, 2013 |
 | Luca Xavier Bozzo | | Cazis | Jun 13, 2013 |
| Dave Edmondston | | Landwasser Viaduct | Mar 3, 2012 |
 | Willem J. Steen | | Landwasser Viaduct | Jun 19, 2011 |
| Massimo Zuccotti | | Bever | May 7, 2011 |
 | Smets Philippe | | Samedan | Aug 18, 2009 |
 | Effimera59 | | Landwasser Viaduct | Aug 9, 2008 |
