Volume knob

I am trying to find a volume knob for a late 70's combo. The ones with the chrome center. Re-doing my amp with new tolex and would like to fix the one broken knob. I sent this amp back to mesa a few years ago and they did a great job. I was missing some eq buttons and they replaced them all. Obviously I have broken the volume knob since then. I also have 2 early 80's mk lll. Love my boogies. Been ridin hard and put away wet for years and still sound amazing.

I'm pretty sure Mesa has some in stock. I ordered up some not too long ago.

They're so similar to Fender knobs that I think they're actually the same knobs that Fender was using, for a time.