The Twin....knob question

[Doc Stitches]

I have a 1988 Fender The Twin amp and need a new reverb pot for it. The knob broke off. I adjust it with a screwdriver but that gets old. Does anyone know where can I order one and what is the part number....or what is a good replacement ?

Thanks in advance.

[izzybell2810]

It's 100k lin pot (B 100k) I believe mouser is the best bet in the US.