[Eliot Ness]

Skip, that same chassis was used in the Crosley Grandfather clock.  The following site covers how he repaired his volume control (under Repairs and Volume Control & Switch):

http://mcclellans.com/Crosley124PlayTime.htm

He also shows very clear pics of the underside of the chassis farther down the page.

Other than that Mark Oppat would be your best contact for a replacement:

http://www.oldradioparts.net/controls.html

Edit:  Here's a post I found from Mark about the volume control in question:

"King of Controls" here to help. Your set has whats called a "gain control" and it uses a linear, or better, a REVERSE taper pot. Its nearly the OPPOSITE of AUDIO taper ! 5K is correct value for the Crosley 124.


Some have that 250 to 330 ohm "stopper resistor" built in, some add it externally. Most of these controls are in the 3K-15K range. These sets usually suffer the problem of all the gain bunched up at the last bit of rotation before full on (or oscillation occurs). A reverse taper control will help smooth that out.

I have most types in stock, can supply them with most any type of shaft, with or without power switch.

Mark Oppat