[ Ref. Bob Yoder in 180810 MMdigest:
 [ https://www.mmdigest.com/archives/Digests/201808/2018.08.10.02.html 
 [ "The most noticeable thing is that the rolls are 29.8 cm (11.75")
 [ wide. Even setting the roller bar at maximum, it doesn't fit at all!"

In case the question persists: The roll is a music roll for a Römhildt
Virtuola. The notice, "HS Schutzmarke", declares that "HS" is a licensed
trademark. See:
https://digital.deutsches-museum.de/projekte/notenrollen/detail/2014-1032/ 

Claudia Nauheim
Leipzig

[ MMD articles about the Römhildt Virtuola (a.k.a. Pleyola Melodia) are
[ indexed at http://www.mmdigest.com/archives/KWIC/V/virtuola.html 
[
[ Claudia Nauheim is a musicologist of music rolls as well as
[ Editor of Das Mechanische Musikinstrument (DMM), the journal
[ of the German mechanical music society, Gesellschaft für
[ Selbstspielende Musikinstrumente (GSM).
[
[ Danke schön, Claudia! -- Robbie