Volume controls can be 500K or 1 meg. Both were used in later tube radios. Exact value isn't critical.
Several places sell replacement parts, AES, www.tubesandmore.com Radio Daze, www.radiodaze.com and PTOP, www.oldradioparts.com are a few.
Have you tried cleaning your volume control?
Norm
: I have this radio to refurbish. I need a new volume control switch but it's not marked any where. Help!
: Also need the name of a good supplier of parts and when replacing old resistors, which is the best to use?
: Thanks, MNS