This song from 1919 was composed by Pete Wendling. The song begins:

Mary o' mine, Mary o' mine,
Grew like a rose in a bower,
Bloomed for a day,
Faded away,
I lost a beautiful flower;
Sweetheart and friend, right to the end;
That's why I miss her so.

This is a used player piano music word roll. I do not have a player piano so I haven't played the roll, but the roll is in good pre-owned condition, so it should play fine.

The box is in good condition (the front panel has an edge split on the right side).