A clip with the text "137 Sekunden" typed on it, appear on the Mosaic Investigation wall in Mark's flashforward.
"137 Sekunden" is German for "137 seconds" - the amount of time the Blackout lasted - and Mark remembered the clip as Agent Vreede read him a report about Rudolf Geyer who claimed that he knew the reason why the blackout lasted "137 Sekunden".
A similar strip of paper appears on Nhadra Udaya's Mosaic wall. The only apparent difference between the two is that the words are handwritten in marker on Nhadra's wall.