Schaff's catalog lists "Organ Punchings," and I had them send me
samples.  I called Schaff about them, but they had no clue.

The items are from American Piano Supply Co., #33350 or #33850, 3/8"
diameter x .050, with a center hole.  Packet of 100.  Does anyone know
what these are for?

Duaine Hechler