I was given a Baldwin Howard 1870-1890ish Cabinet Grand Piano. It could not be tuned appropriately and had withstood too many years of living amongst the elements to be restored.
Apparently they needed the castors to lift the piano a little higher to clear the bottom, so they cut out round spacers from a cardboard cigar box like the one shown. My mom had just given me an old one that she had in her stash of stuff... So funny to unscrew the castors and recognize the print and color enough to match up with the cigar box. Resourceful.