I would like to know the correct size of the motor pulley for my
Coinola.  The wooden step pulley on the roll frame is there but the
motor pulley for the pump and roll mechanism is missing.  It, of
course, will need to be a dual pulley but I need to know the outside
dimensions of each step and where I might obtain one.

Another thing that concerns me is that even though it's a CX with
bells, as shown on page 545 of the Bower's encyclopedia, it uses an
"A" roll, not the "O" roll as cited on that page.  Does this mean it
is not original to my piano?   If so, would it be advisable for me
to look for a replacement?  Thanks so much for any information or
direction.

Allen Scott