| seen by (11) | | location | date |
|---|
 | Lorenzo B. |  | Ilanz | Aug 21, 2023 |
 | Martin Šarman | | Celerina | Oct 28, 2022 |
 | Fabio Miotto | | Bever | Aug 24, 2022 |
 | Federico Paoletti | | Landwasser Viaduct | Nov 12, 2013 |
 | chrisschumny | | Berguen | Jul 13, 2012 |
| walterbonmartini | | St. Moritz Railway Station | Jul 11, 2012 |
 | Christoph S. | | Berguen | Jul 10, 2012 |
 | Francesco Cornalba | | St. Moritz Railway Station | Oct 10, 2010 |
 | Willem J. Steen | | Filisur Bahnhof | May 21, 2009 |
 | Chris Walters | | Filisur Bahnhof | Dec 22, 2008 |
 | Artemios Klonos | | Landwasser Viaduct | Sep 17, 2002 |
