Wanted: Modern Whelen 295SLSA6 Siren Selector Knob

I'm looking for either a new or used in very good condition selector knob for a Whelen 295SLSA6. I have one that is broken that I want to replace. I'm in North Carolina for shipping purposes. Photo included to show the style knob that I am looking for.
Thanks in advance!

 

[Jennifer Rose Towing]

I have seen a good selection of knobs at the hardware store. If you are not able to find any here, might be worth a trip to the store.

 

[radiostrobe]

I have seen a good selection of knobs at the hardware store. If you are not able to find any here, might be worth a trip to the store.

Thanks! I’ll keep that in mind as an option.