In 1904, M. Welte & Söhne from Freiburg launched the Welte-Mignon music rolls as the first reproduction rolls on the market. The Welte-Mignon T100 rolls are usually called "Welte red" rolls because the paper used was such a striking red colour. The paper is 32.8cm wide. Welte red rolls in T100 format are also available in other paper colours green and white - depending on the place of manufacture and paper availability. On the front of the mostly wine-red hinged music roll cartons is the label with the designation Welte-Mignon, the roll number, the title and the name of the pianist. At the beginning there is also the recording date of this piece. As with all roll types, the perforations for the 80 notes are located in the centre area - at the edges there are 10 perforations each for the bass and treble emphasis control.
The same label as on the box can also be found on the music roll - as the roll runs from bottom to top, the label is upside down when the roll is inserted. There is a round eyelet at the start of the roll for attaching it to the take-up reel.
