These piano rolls are a continuous roll of paper with perforations (holes) punched into it.
The roll moves over a reading system known as a 'tracker bar' and the playing cycle for each musical note is triggered when a perforation crosses the bar and is read.
They make wonderful display or craft journaling pieces.
There is - Pittsburg Pennsylvania Waltz, That Old Irish Mother Of Mine & Community Land.
Size - 32cm long approximately.