Maggie Richardson wrote:

> Can someone tell me anything about these rolls?
> The flanges are wood. The right flange has a square metal-ringed
> <opening. The left flange has a round metal-ringed opening.

These rolls were an early experiment by Melville Clark.  They fit
my pushup Apolloette.  It is called the Melville Clark Apolloette.
I only have four rolls for it.  I may be interested in yours.

D.L. Bullock    St. Louis
www.thepianoworld.com